Lemmy.world is ran by a pro. Dude runs one of the most used mastodon instances. The fact that Programming.dev is stable while .world is not quite so, is purely due to the amount of users. Get 80k on this instance and you will see what happens…

I checked the about page and damn… It is a for profit company and quite a big team! It consists of 26 people (!) to build a terminal… It is probably going to be a subscription at some point… Not for me.