Lel but the percentile is smaller than on chess.com for me lichess percentiles tougher
The ratings on LiChess seem screwy

I’ve beaten an 1836 in blitz on lichess and they told me they were 1550 rapid on chess.com. But sometimes I play 1400s on there that feel like a level 30 chess engine so go figure.
So I started playing on LiChess only recently. They started me out with a rating of 1500 and after around 75 games, I am now rated 1800-1900. There is no way I am that high. I am just 1400-1500 on Chess.com
Also I played this game, and this guy blundered like a noob. There is no way he is 1800+
https://lichess.org/3KVgVOFdZ1r0
I am not yet allowed to post on the forums there, so am asking this here ... are their ratings accurate?
There is no reason to criticize their ratings as inaccurate. Ratings are not absolute measures, like the temperature that water boils at. They are always only accurate relative to the group of players being compared. Blitz ratings here can't be easily compared to blitz ratings on other sites and so on.
The main reason would appear to be the differing starting points for new players. I have heard that lichess starts everyone off at 1500 while here, people can self-rate and start anywhere from 400 to 2000.
At any rate, ratings mainly exist to help you find good matches. If they do that as well as possible, they are working.