I am _very_ disappointed with Lemmy. The community is full of echo chambers, and that's already bad.
But what broke the camel's back for me is the fact that one of the Lemmy creators one day literally posted what I will describe as a propaganda website. I had to double check, but nope, it definitely is a propaganda website. The fact that you made a software just to spread your dangerous ideology is _so_ disgusting. Malicious.
I used less and less Lemmy since then.
This also prompted me to contribute to PieFed[1], but at this point Fediverse for me does not feel the same anymore. That event left a bad taste in my mouth.
I also have had bad experience with Mastodon, but this reply is already long.
The word Fediverse has "diverse" in it, yet it feels like anything but diverse. It's full of people with same beliefs screaming the same argument every day. It's full of that open source purists forcing you to change to Linux or something like that[2][3].
[1]: https://join.piefed.social