With the wedding vow issue, I think it was the way she said it that set people's teeth on edge. If she'd said she and Harry had made their own personal vows to each other the day before, everyone would have understood - they wanted a small, quiet, intimate, private moment before the pomp and ceremony of a 'royal wedding'. But to say they were 'married' the day before, well, that's just odd.
Many certainly do think their religious wedding is the real deal, perhaps having gone through some sort of legal ceremony at a registry office, and couples do make important promises to each other outside of a legal marriage ceremony, but it usually happens when the legal bit isn't particularly personal, just transactional.
If they'd wanted a small, quiet, personal wedding without all the trappings, I'm absolutely certain HMQ would have had no issue with it at all.
To have the full on royal do, with carriages and choirs and celebrity attendees, designer frocks, the works, then claim it wasn't your actual wedding seems slightly tone deaf.
Anyway, I'm sure Meghan understands a bit more after this last week, of what it means to be a member of the royal family. She probably wants no more than to go home and see her children. It would be nice to think they can then both just get on with their lives outside the 'royal' bit of the family, as they wished, and perhaps end up with something more of the 'family' relationship.