Say anything that goes against the grain and you will be shunned immediately.
Also - not that that is always a bad thing but Lemmy is extremely left leaning and you just can't discuss certain topics here at all.
(Guns are always bad / Cars should all be banned and traded for bicycles / traveling by plane is bad and you should feel horrible for destroying the environment..)
What I enjoyed about early reddit was the tech/nerd focused community that did not try to push their political opinion into every thread.
Basically the worst part of reddit is already here, just that the echo chambers are smaller for now.
Honestly, I'm not sure how I feel about it.