He didn't really - he's paid for his opinion but because she's a "black" woman and this involves mental health then it suddenly becomes super sensitive...
In fact, the whole thing becomes some semi-woke issue just because of the angles being spun there - ordinarily a woe is me story about a famous actress and her aristocrat husband having to live off his trust fund would be absurd but how in those angles and you're supposed to be hugely sympathetic with them etc..
I don't see why multiples things can't be plausible here - that an unnamed member of the Royal Family is an out of touch racist, that Meghan is manipulative and a bully and that Harry is a bit thick/naive and has been completely played. This will absolutely blow up in his face if they ever get divorced.
Its quite telling that she didn't really have any friends or family at her wedding, she had her mum, cast members from suits and loads of celebrities, including Opera (who she'd only ever met once before). The first husband got ditched not long after she landed the role in suits, no cheating or other issues involved. Friends seemingly got ditched too.
The diva/bullying isn't just someone leaking gossip to the tabloids - it's multiple people, including journalists witnessing a staff member being reduced to tears in Australia after being scolded by Meghan, two PAs quitting in short succession and apparently a whole bunch of complaints to the palace from others. It wasn't just the bridesmaid dresses incident that caused an argument with Kate - they also apparently fell out over.... the way Meghan had spoken to a member of Kate's staff.
Harry has never been too bright - he went to one of the best schools in the country and came away with only two A-Levels - a B in art and a D in geography (only the latter one involved actually sitting an exam) his B grade is suspect as his art teacher claims she was instructed by the school to help him cheat. That apparent cheating is the only reason he even managed to scrape the min requirements to become an Army Officer - he was apparently well-liked in that role but realistically, he knew he wasn't going to go any further than Captian - that would involve passing exams again! Or having some position where he didn't follow a normal career anymore and he somehow got a bunch of actual promotions (not just appointments/ceremonial roles) he'd not earned.
That they were surprised the RCMP would no longer provide security to them is baffling, they're no longer working Royals yet they're expecting Canadian taxpayers to just cough up for their security.
Likewise Meghan's claims about not having anyone teach her what is expected - she didn't know the national anthem (as if that is difficult to google herself) or she didn't know basic stuff about royal protocol, expected behaviour etc... Harry only thought to ask her if she knew how to curtsey when in the car going to meet the Queen for the first time... He's a bit dim but she could have asked him about all of this stuff or indeed he could have been proactive and told her what she needed to know.
The whole thing was a big publicity play for them - being a victim. race etc.. are big things these days, especially in America - they played right into that, Harry has "done the work" etc.. fits neatly with a popular view in the US of the Royals being out of touch etc... (which isn't necessarily too far wrong). But essentially Harry, being a bit dim, has allowed his whole family to be thrown under the bus for the sake of raising their profile further as some power couple and gaining more popularity in the states. As much as he's tried to separate his accusations re: "the firm" rather than individual relatives the obvious damage has been done.
I thank you for taking the time to write that. It all fits for me.