I think commenting on an actor's public career choices aren't gross at all.
Honestly, and I'm not being snarky, I just consider career choices to be personal, whether you have a career in the public eye or not. The reasons she chooses one show over the other are her personal reasons and really don't require an explanation to the public. Some choose to do so, as in the case of the Great Comet fiasco. And some are leaked as tabloid fodder. But who are WE to decide what roles are best for HER, even if our intentions are good? For example, whatever you personally think of Frozen, if she had chosen it over Carousel because it's what she wanted for herself, her family and her career, I wouldn't call that a "horrible choice".
I mean, I don't know if Caissie Levy's choices were literally Frozen or unemployment. I just know that she chose that role for whatever reason she felt was right for her which may or may not align with my own choices, opinions or priorities. Personally, I think it's great because I liked the film and I love the score and I believe the show will be a juggernaut and may possibly even do well at the Tonys if they make the right adjustments. It could wind up like Lion King or Aladdin, but based on the recent overwhelming success of the film and on audience buzz of the tryout thus far, I think it be a commercial success at the very least. And I don't see that as a bad thing for anyone involved.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian