Is 10/20 like 4x harder than it was 1-2 years ago?

[climber]

I've def run bad in my last two shots at 10/20 6max.
-180BB in 3k hands.

2 years ago i beat this game for 2+ BB/100 and I'm a much better player now.

I'm crushing 5/10 but getting destroyed everytime I try to move up.

Comparing to 5/10 I feel like there are 1/3 to 1/4 as many decent tables to sit and there are 3-4 times as many players I dont want to play with. And the fish are like 3x better postflop. Some are still horrible but those are the 75/49 guys who river boats vs my nut flush and take down $400 pots with 42o raised UTG vs me. Obv that part is me running bad but I was wondering in general if I am missing something or if I'm deluding myself or if the gme has really gotten this much tougher?