you can choose an instance that does it for you.
Already done.
They’re getting access to your your lemmy content either way.
That's not an argument for cooperating with them.
That’s not at all what I’m talking about.
But it's what matters, and it is what the person you originally replied to was talking about. (Edit- it's not what they were talking about, I thought you'd replied to a different comment. The rest of my point stands.)
Whether I personally see Threads stuff does not relate to whether Meta can and will create an inflection point that distorts the fediverse into something different than it is today. Nothing in their history points in any direction OTHER than - we'll all be making another exodus at some point, to get away from them and companies like them.
Edit: I say again - literally no upside to federating with Threads for anyone except Meta.