I would have a problem with it if Charles predeceased Camilla and she was treated in exactly the same way as The Queen Mother was, since she isn’t the mother of the future King. Obviously they shouldn’t just say thank you for your service, off you go but things like a lying in state and being eligible to serve as CoS in William’s reign in the way that QEQM was (although I understand that that provision was specific to her, so this wouldn’t happen as things stand.)
If anything in recent years she seems to be more popular than Charles himself.
I wasn’t particularly happy that she would be known as Queen (I am not a huge Diana fan or anything) after it was said at the time of the marriage that she wouldn’t, as it feels like moving the goalposts, but I look at it this way: Charles was basically forced to marry as though The Firm were picking a pedigree for the heir. Why Camilla wasn’t suitable I have no idea. Ok, she wasn’t a virgin but Queen Victoria’s mother certainly wasn’t given that she already had two children and that was well over 100 years before. Perhaps a knee jerk reaction to the abdication crisis, and perhaps the RF wouldn’t ideally have approved the then Duke of Kent’s marriage but there was a succession crisis at the time. Maybe they weren’t all that fond of the fact Camilla’s royal blood was illegitimate, but whatever it was, that wasn’t Charles and Camilla’s fault. Diana should never have been dragged in if Charles didn’t have any feelings for her, and I feel that the Queen welcoming Camilla and stating that she wished her to be Queen was her way of saying that The Firm had made a mistake in not allowing Charles to marry her in the first place. She saw how unhappy Charles and Diana were, she saw Margaret unhappy and the man Margaret was allowed to marry turn out to have fathered a child with somebody else behind another man’s back and presumably Margaret’s as well before the wedding. I am glad they are modernising and hope that the Sussexes won’t have put the RF five steps backwards for the sake of other family members’ future happiness.
I don’t blame Diana either - was it any wonder she sought security by marrying the one person who (we thought) couldn’t divorce. The ‘wrong gender’ probably wasn’t put on her sisters to the same extent, as their parents hadn’t lost a son at that point. The Spencers (not those currently living) also have some responsibility for the whole thing. It was a tragedy in more ways than one.
I am of the opinion that no member of the Royal Family should be expected to marry and have children if they don’t want to, and maybe we’ll see that in the future. But if Charles had refused to marry because he wasn’t allowed Camilla, we would now have Andrew as the heir.