This is not the real Sync dev, it's someone pretending to be him. The real account for LJ Dawson is @ljdawson. He confirmed that via his Reddit account. The community he established for the Sync for Lemmy app is @syncforlemmy.
Well... it's a verbatim qoute from the linked Reddit post. I'm guessing the intent was to help people avoid patronizing Reddit rather than impersonate.
Hi there 👋 I'm enjoying it so far, I'm definitely way more active on here than I probably ever have been on Reddit. Must be something about the small community thing.
Yeah, the post history is dubious. I'll wait for confirmation from his Reddit account, because at least I know that's actually LJ.
Edit: This is not LJ Dawson, this is an impersonator. The real account is @ljdawson, and he created the community for the new Sync app at @syncforlemmy.