I've been on the internet long enough to say it won't. It will last a long time depending on the design of the system that creates the communities (mods, upvotes/downvotes, rules, algorithms, etc), but even that is limited because eventually every community reaches the size it needs to to encourage toxicity, echo chambers, circlejerks, and attracting even more toxic people from outside the communities.

It took reddit many years to start reaching that point though, I hope it takes these federated sites longer. And hopefully due to their design, they can keep most of the toxic people isolated.

I hope

sorry to spoil it for u but paradoxically growth could in fact ruin the peaceful vibe of lemmy, maybe to a certain user count.. and then it will start to get worse..user count should be capped at some point and with regular bad user swept, to leave place for contributive people. as much as the content here is cured, userbase need to be cured too..its like harmful weeds that grow in ur garden and that needs to be weeded out periodically

Especially the growth part would be nice at this point of time