Avalon I don't think there is "snide bigotry towards Americans on this post" as you say.
I think most British people welcomed Meghan when she seemed to be making Harry so happy. We feel protective towards him and he always looked the odd one out when he was with William and Kate. We all wanted him to find his own partner.
However, I for one, have gradually begun to dislike Meghan, and it seems that many Americans don't like her either, so don't blame the British. It's nothing to do with her being American or mixed race - it's the way she comes across. It's what she says, what she does and what others say about her. No smoke without fire and at least some of it has to be accurate.
Obviously I don't know her personally, but I do take umbrage at her arrogance that her role is to "modernise the Royal Family". She stated that her mission was "to hit the ground running" and that attitude hasn't gone down as well as she seemed to think it would.
Also Harry has always been one of my favourites, but he has changed a great deal since being with Meghan, and not, IMHO, for the better. He was not a hypocrite or a rebel, before, but now he is desperate to keep Megan happy by the look of it, even if it means "Hollywood-ising" his life. Sigh.