It's a very accurate measurement of strength. The only way it can go down without me playing worse is that everyone else got better, or lots of people left chess.com (because it sucks) and there was a rating deflation.
Look I’m not sure game review normally says I play around 1250 and when I played in a tournament my elo was 1101 but my chess.com elo is 600
Chess.com got easier suddenly.
After struggling for months I got 26 out of my last 30 puzzles correct.