It's growing pains from individual instances not being quite ready yet, and from people not understanding the point of decentralized instances. Too many people and subreddits congregated in lemmy.world.
Both of those things will get better in time. The admins need time to upgrade their servers, and the new users need a little bit of discussion to figure lemmy out.
As long as lemmy's user base keeps growing, then we'll get there eventually.
I have a coworker whose default mode of thinking is to manually type everything. He knows about things like tab completion and copy-paste, but for some reason those two things just aren't baked into his brain as a natural reflex like it is for most people. Like if he has to put a URL or database connection string in a config file somewhere, he'll start manually typing the string one character at a time, and will keep alt-tabbing between the config file he's editing and the email or whatever that has the reference string.
It drives me up a wall.