I feel like this instance is getting too big and all the content is being centralized here. Am I right or there are other instances thriving too?
Wherever I go I keep seeing lots of lemmy.world users and communities and kind of feel worried about centralization.
To be honest it is to be expected, people will flock to the most active (and consequentially better maintained, at least subjectively) instances.
This might only change once these big instance become saturated and close signups, though even still I expect to see only a handful of Lemmy / KBin instances staying relevant once the dust is settled, especially with the recent precedents like Beehaw defederating from “too open” instances.