I have less of a concern about replacement players and more of a concern about arenas with 20k fans, but yes, I think they should pause.
Yeah, there are some weird rules out there right now. I've been to maskless games, concerts, packed shopping malls and theme parks - all in FL; but was also on a cruise recently and it was only at about 1/4 of the capacity. It's funny that people are willing to do all of these activities in packed quarters, but have chosen cruises as the thing they won't do - despite there being major safeguards in place to prevent transmission (full vaccinated only, testing requirement before boarding, masks indoors, no self-service buffet, etc).
Anyway, sorry to take this off-track. As for the question at hand, I think they just have to stick it out. It's rough and unfair to some teams (see Cs last season), but it is supposedly equal opportunity. This thing isn't going to end just because teams pause - it would have to get much worse than it is now for them to do anything.