regardless of his opponent's elos
Well, I wouldn't go that far
If you make instructional videos and can't win a single game against a certain elo then... you're basically backyard professor.
I mean… almost all of his opponents were titled players.
What do you mean?
You mean the thing I pointed out in the post right before the one you quoted?
He was playing 3rd league a year or 2 years ago if I remember right, so I would guess he is among the lowest rated players in the 1st league. In any case playing 1st league is an improvement.
It would be nice if he could get over 2 000 in the near future.