I wouldn’t argue with the dude; he’s got a clear case of bad-faith-itis. What you did was bad, so you shouldn’t have done it, but no I won’t tell you how to fix it.
The absolute best you could have done is cross-posted to a Mastodon/Bluesky/whatever account as well, but you can’t just always go around yanking the rug out underneath communities especially if you’re in a position where it’s not just lazy shitposting and worthless commentary.
…that said, you have moved anything you can to being posted somewhere in tandem riiiiiiight?
Question: how is LinkedIn useful to you?
For me it’s just a non-stop swarm of recruiters from India who want me to kindly listen to their offer of a job that pays less than I’d make picking up garbage, utter sociopaths dredging up some psychotic hustle culture nonsense, and previous people I’ve worked with/for asking for favors, which of course means free.
Is it somehow more useful for an actual business?