My worst game EVER

I put a recent game through Chess.Com analysis and I got a fairly funny result... Note that this was a game that I won.

I'll let this speak for itself:

Inaccuracies: 1 = 3.2% of moves
Mistakes: 15 = 48.4% of moves
Blunders: 1 = 3.2% of moves

That was the most terrible thing I have ever seen. Do you call yourself a chess player? Such a disgrace...

Most of the time, when chess.com judge that my move was a mistake or blunder, I still can't see and don't understand why, even when looking at the suggested moves variation. I guess that's because I'm not yet that good a player, and needs more "qualitative" explanations instead of just moves variations.

This happens to me all the time in games like this where I get a huge advantage early (i.e. 4.0+ points) and cruise to victory.

The reason is that with such a lead a computer (or 2500+ grandmaster) will have no problem dispatching you in a quick and efficient manner.

In other words, the computer becomes more "picky" and does not like to detour off what it sees as a linear path to victory (i.e. 4 points becomes 6 points, then 8.5, then a mate in 4).