I do not think twitter.activitypub.actor is a good idea, nor that the Twitter cross poster is a good idea. Let your Twitter past die. Kill it if you have to.
@Gargron Cross posting is a fine idea. And Twitter is the past and the present. If I had to drop either Mastodon/AP or Twitter now, it isn't going to be Twitter, however much I approve of the concept of open standards and federation.
This Mastodon instance is for people interested in technology. Discussions aren't limited to technology, because tech folks shouldn't be limited to technology either!