No, I absolutely understand how federating sites work, and don't need the condescension.
It's common, in many types of federated reimplementations of non-federated sites, to create special-case bridges that allow treating a large non-federated site as if it were following the federation protocol, precisely to help people migrate and to continue interoperating with users who are on the non-federated site.
In the specific case of ActivityPub, there are multiple bridges that allow following Twitter users as if they were part of the fediverse. Multiple Mastodon users I know have mentioned them. People just don't talk about them very clearly, or document them in migration guides. Hence my comment suggesting that.
If specific portions of the fediverse want to avoid ever interacting with Twitter bridges, they can absolutely do that, just as they can avoid interacting with other portions of the fediverse. But it would be helpful if potential new users had some information they could use to migrate more smoothly.