They are connected (you can boost/retweet Lemmy posts from Mastodon) but use a different API for apps, so they won’t all support it. Kbin supports interacting with both Lemmy and Mastodon, but it’s a different platform so you’re going to have to create a new account
As always, non-profit open-source software gets branded as “complex” for no reason. Mastodon’s maintainer even made mastodon.social a default server so it takes absolutely 0 seconds to get started which was hated by the userbase for the centralization it causes, and it’s still “complex”
It’s great. Number go up mentality is dead, none of Twitter’s features used for toxicity are integrated, actual communities are formed
“These are the things you can do to alleviate climate change” That’s still negative. It’s blaming climate change on people instead of corporations and governments, a trend started by bp