Basically indistinguishable from the rationalizations people come up with to backslide on quitting smoking:

https://andy-bell.co.uk/i-think-im-not-alone-that-mastodon-is-giving-me-the-ick/

"I won't support Elon Musk under any circumstances, but I want to post on Twitter, therefore posting on Twitter does not support Elon Musk. QED!"

I'm really torn on people who know staying on Twitter is wrong between thinking it's advantageous to admit that, yes, it totally sucks that he has bought the site and forced us into this mess, and also saying the ask here (merely stop posting) is so unimaginably small and tiny.