I don’t disagree that it’s a weakness. But that just is how it is for now. I’d guess that it will settle down to a few dozen “strong” instances that are all federated together, with hundreds more smaller instances available, but right now there are like 5 super-packed instances (lemmy.world, sh.itjust.works, kbin.social, etc) which are getting killed with a double-whammy: all the users and all the communities are on them.
You have a right to that job! Everyone gets a bit of Imposter Syndrome every now and then. The realization that the entire World is run, every day, and built up, for centuries, by average people like you, and yet it continues to function relatively well. We are all out here just doing our best, day by day, just trying to do something that makes the World a slightly better place.