I think you misunderstood the request to “share” there. They’re most likely talking about boosts, Mastodon’s version of Twitter’s retweets. Lemmy, I think, doesn’t implement boosts.
It doesn’t, making the posting to Lemmy completely pointless, even if it wasn’t a commercial experiment. Cross-posts don’t count as boosts.
I’m not your business consultant. If you want to hire me, DM me. Don’t spam this Lemmy community.