She'll be Queen automatically regardless of what anyone thinks. They might decide to style her Princess Consort as a way of avoiding bad PR, but it doesn't change the fact that she will literally be Queen. In the same way as she is the current Princess of Wales, but doesn't use that title.
I do wonder though how much the whole "devoted soulmates cruelly prevented from marrying, finally able to be together" thing is actually true, and how much of it is clever (and expensive!) PR. By all accounts Charles had more than one mistress when he was first married, and Camilla was perhaps not even his most serious mistress. I've read that Camilla desperately wanted to marry Andrew Parker-Bowles who was considered the more eligible 'catch' and that actually she wasn't interested in marrying Charles. Maybe that's true and maybe it's not, but I think the Palace have worked very hard to sell the narrative that young Charles and Camilla were desperate to marry and not allowed.
I don't particularly care for Charles but I think he'll be a perfectly decent if uninspiring king. He has an admirable work ethic, has genuine passions for important subjects like the environment, has a sound grasp of things like economics from running the Duchy of Cornwall, and generally seems like an intelligent and hard-working, sensible sort of quiet chap. I honestly dread William eventually becoming King because everything about him screams petty, immature, utterly work-shy and lazy, and there are so many dodgy rumours both about his personal life and about his anger issues and tantrums. I'm also worried that he feels the need to manipulate his own family members to gain PR, eg leaking stories about Harry and Meghan to the press, staging that cheesy budget airline pap stunt. But then Charles was certainly immature, manipulative and petty in his treatment of Diana, so perhaps William will eventually grow out of it too.
When king Edward wanted to marry Wallace Simpson he had to abdicate as she was a divorcee the same rules should apply to Charles and Camelia.
It's an oversimplification to say "he had to abdicate because she was a divorcee." Edward was pressured to abdicate due to a complex series of political factors, not least the growing sense that he himself was an unfit King due to his continued interference in British politics (eg his public statements about Labour leaders, his interference in the Invasion of Ethiopia), his perceived Nazi sympathies, and various unsavoury rumours about Wallis Simpson. The 'scandal' was in large part created and manipulated by the press and by people with a political agenda to force Edward off the throne, and public opinion was actually mostly for Edward being allowed to marry without abdicating. If circumstances had been different (if Edward had been a less divisive and unpopular King, if he'd fallen for a nice well-liked English aristo who happened to be divorced) then it's likely the union wouldn't have been all that controversial.