This may have already been answered (I'm still catching up) but Sarah seems to have a knack for alligning herself with like-minded people. White Fox, LaBang and Tropeaka all have her back when things go wrong and seem to have no problem with how she chooses to advertise their products. They're also happy to delete negative comments and even when people sent them the Scrabble picture of Kurt neither brand batted an eyelid.Since we're speculating about her vax status (I'm convinced she isnt vaxed) I wonder what it'll mean for their collabs and work engagements. Many brands might insist on them being vaxed if they have to be in a studio or a work place for a shoot, for eg.
Don't forget, WF signed off on the braids and "ghetto" themed photoshoot, as well as her almost blackfacing with a fake tan darker than the tokenistic black model they had. And then there's the Byron shoot this year when they all traveled during a pandemic, none of them wore masks, no social distancing, all went out for dinner despite all being sick. They are all Sarah's people.
So I don't think her main collabs care if she's vaxxed or not. They most likely aren't, either.
Now Kurt's sponsors might be a different story, and if he wants to continue to travel to make content, he'll most likely have to get vaxxed. But then again, True Protein were advertising for a content creator recently so perhaps they've already dropped him. Time will tell.