I recall the news coverage as largely positive at first. People were pleased Harry had found someone to marry, and welcomed her. It was all a bit of a fairytale, apart from the speed at which they married. She was seen as a bit of fresh air, and some one who was media savvy and used to being in the limelight, due to her acting, so that was generally considered positively. Didn’t she work for a diplomatic office for a while also, which gave her credibility.
I’m not sure when or why the general feeling changed amongst the press, and I do think she got a hard press for a long time which was unjustified.
However, I do think they’ve scored an own goal. They (both of them, not just MEghan) went off to America to step out of the limelight, lead a quieter life, and before the plane had hardly touched down, was on a return flight, suing people, writing books, falling out with relatives etc, all in the public eye. Hardly living a quieter life. Maybe they just judged the mood badly, or had really bad advisors, but it hasn’t really gone as expected. Whether they can pull back from this, I don’t know. Camilla has succeeded from being the bad guy to gaining a lot of respect, and also Beatrice and Eugenie seemed to have matured and found a better place now, so given time, maybe.