Obviously Tangled can live completely separate from Bluesky, it doesn't even need to share branding. Protocols are just protocols and people who don't understand how email works often don't even realize that Outlook and GMail use the same protocols. I'm hoping for this future personally where ATProto is only something the nerds care about (and write code for.)
(Please don't respond to this post with ideological argument. I'm just trying to talk about Bluesky and ATProto.)
That may be the case, but anyone can use ATProto. Unlike X where reach is suppressed for ideological motivations, or Mastodon with the federation turf wars, anyone can use it, regardless of their politics. If you disagree with the ideology of the majority users and avoid it for that reason, it just perpetuates the problem.
Unfortunately, I suspect it is only that way at present because the "other side" is perfectly content to continue existing in a communications environment that prioritizes them, rather than one that is actually open.