Absolutely. If this story tells the whole truth, January 6th defendants still have their 8th Amendment rights, and charges that they have been violated should be vigorously investigated. Rights have to apply to everyone, even to people we don't like.
If they're investigated and cleared, though, that settles it. This fits the pattern, to me, of something a defendant's lawyer would scream to the press in order to drum up sympathy for their otherwise doomed client. Things like this often also tend to persist by people who want to keep bad-mouthing the charged, even after dismissal. If it gets fully investigated and dismissed, let it go.