Now that WordPress has official ActivityPub support: yes, pretty much. Posting to both Mastodon and Lemmy will be a challenge, though, as Lemmy doesn’t really offer following individual users.
Technically, any website can be an ActivityPub server, so you could “trick” Lemmy into thinking your website is a community while “tricking” Mastodon(-likes) into treating it like a normal feed. That’s pretty messy, though.
Now that WordPress has official ActivityPub support: yes, pretty much. Posting to both Mastodon and Lemmy will be a challenge, though, as Lemmy doesn’t really offer following individual users.
Technically, any website can be an ActivityPub server, so you could “trick” Lemmy into thinking your website is a community while “tricking” Mastodon(-likes) into treating it like a normal feed. That’s pretty messy, though.