Nope, not at all.

Lemmy is a Fediverse equivalent of Reddit.

Mastodon is a Fediverse equivalent to Twitter and Facebook.

There's no correlation to Lemmy and any sort of shitcoin, OTHER THAN lemmy server operators asking for donations.

You can learn more here, including how to join a Lemmy server, or to make your own. https://join-lemmy.org/

Lemmy uses the W3C ActivityPub standard for federation. No blockchain involved.

One of the more irritating things the crypto people did was to convince the general public that federated services were something they'd come up with, or even that they were only possible through the good offices of The Almighty Blockchain.

In practice, federated services that people actually use are generally not crypto-y.

More of a federated/ mastadon version of reddit. So it depends on which instances you are looking at.

No, it's merely a federated reddit alternative which is why we're discussing it here.

I didn't find anything about that on Google or Wikipedia https://en.m.wikipedia.org/wiki/Lemmy_(software)

AFAIK no, it's a fediverse thing.

They do have crypto donation links (alongside a bunch of others), but the main devs seem to have more communistic tendencies (what with the big Che github avatars).

Lemmy is a communist tankie. Not sure what happened to it, but there used to be a T72 tank in their logo.