Why do you keep asking the same dumb questions? This is your second topic in the last two hours about this and you made a similar topic less than two week's ago.
Americans use plastic pieces and roll up boards all the time, why?

I'd have no problem taking my nice wooden board and $130 ebonized set to a tournament. I haven't played in one in a very long time, can you even do that? Can you even walk up to the table and drop a wooden board and set it up? I've never seen it.

While the wooden sets look pretty, I prefer the roll-up boards/plastic pieces for travel. Easier (and cheaper) to replace if one gets lost or broken, light weight, easier to pack and set up, not as bulky, and imo easier to clean. I wouldn't mind having a wooden set, but I've always used the vinyl roll up boards and have never had an issue, so...

I mean I get it , it's portable and cheap, easy to carry and so on. But if you go tournaments and you want some quality games out of it , how?
Roll up vynal boards, mouse pads, silicone all the same uncomfortable, not classy, cheap and dirty.
Some surfaces might not be flat and your roll up board already not good, it gets dirty quickly, it's not stable especially when you playing speed chess board moves alot, cheap looking no class.
Plastic pieces , also cheap, not classy , easier to break the wooden , metal lead comes off often etc....
So MY POINT is , why not use something more classy, nicer, more stable , which won't break your bank either and really reliable to take to a tournaments and qualifies to all FIDE standards.
Something like that:
https://www.amazon.com/Chess-Set-Tournament-Staunton-Complete/dp/B000SOGHQ4
In my opinion it's just perfect tournament set, which won't break the bank and looks fabulous, quality, classy
We use plastic foldable boards an not very heavy woodpieces in my club. Those wooden boards and heavy pieces is a lot more weight to move around when setting up a 70-board tournament. Expenses matters too. Chess clubs doesn't have much money and budgets . Our income is basically fees from members, and starting fees. We have heavy costs too, like the rent.

I have a tournament wood set myself, and I have used it during a tournament, but I inevitably return to the plastic set with a roll up board because it is simply more portable and easier to set up. I keep my set very clean and use a silicone board rather than vinyl because it lays flat. The drawback is that the silicone board collects dust rather quickly, so I find myself cleaning it almost after every game during a tournament. The wooden set is very nice and pleasant to play with; however, it is bulky and takes much longer to set up and put away because the pieces all have an individual strap to secure them in my bag.

Those vinyl boards will lay flat if stored properly -- roll them up for storage with the printed surface facing outwards (not inwards!). If kept clean, they look good, especially with green and buff squares (no bright red squares please).
I can understand using moderately priced wooden pieces, but a fine wooden board is heavy and cumbersome to transport. And it won't stay in pristine condition for long if you take it to tournaments.

For a single board roll as he says. If you have a case of boards store them in the box upside down so the weight of boards in the box bends the corners down, not up.

I have a old vinyl board given to me as a graduation gift in High School. It has held up very well over the years, isn't dirty, and lays really flat. Some more recent vinyl boards I have don't do as well.
As others have said, portability and cost are major factors. Losing or breaking pieces in a set that is < $30 isn't that big of a deal. Having that happen in a more expensive set would not be good. I've played on some nice wooden sets in tourneys but they really don't play any differently than the cheap plastic sets.
Everyone uses the roll up plastic boards and pieces in tournaments and at clubs if you show up with a funky fold up wooden boar you look like a dorky newb.
I mean I get it , it's portable and cheap, easy to carry and so on. But if you go tournaments and you want some quality games out of it , how?
Roll up vynal boards, mouse pads, silicone all the same uncomfortable, not classy, cheap and dirty.
Some surfaces might not be flat and your roll up board already not good, it gets dirty quickly, it's not stable especially when you playing speed chess board moves alot, cheap looking no class.
Plastic pieces , also cheap, not classy , easier to break the wooden , metal lead comes off often etc....
So MY POINT is , why not use something more classy, nicer, more stable , which won't break your bank either and really reliable to take to a tournaments and qualifies to all FIDE standards.
Something like that:
https://www.amazon.com/Chess-Set-Tournament-Staunton-Complete/dp/B000SOGHQ4
In my opinion it's just perfect tournament set, which won't break the bank and looks fabulous, quality, classy