I checked Debirdify a few days ago and it still works. Technically speaking these aren't against the new policy. However, since Musk's Twitter is governed on Maoist[0] principles, who can say if the policy hasn't already changed?

[0] Specifically, the sense that the rules governing the platform are never told to you until after you break them, as to encourage overcompliance and obfuscate when or if rules change.

I don't think so. Movetodon is still working for me.