If lemmy created a community the same name as the username when someone signs up. You could follow a lemmy user and then when your on mastodon (once we’re federated with mastodon) you could see their self posts in their community as a mastodon post and vice versa.
Can appreciate that. From reading the other post, I got the impression that the Lemmy project doesn’t care about fediverse functionality, and I’m glad that’s not the case (?).