It's probably a good idea for the man to get therapy, I'd actively encourage anyone in his position to seek therapeutic input. But there is a difference between having therapy and working on yourself, and monetising your own real (or imagined) suffering for cold hard cash.
By all means, be the guy dealing with your complex feelings - but when you start cashing in by making documentaries, giving exclusive interviews and building a production company/semi-royal brand.... you're going to get lambasted - and rightly so.
Meghan and Harry have enough money to settle down in quiet upper middle class obscurity and privacy somewhere. A nice three bed house in the suburbs, with money left over for weekly therapy sessions for both of them and toys for Archie. The fact they continue not to do this whilst insisting this is all they ever wanted from life is a contradiction they have yet to resolve.
When pushed to say whether you should base a judgment on what someone says or what someone does. I tend towards the latter. There are plenty of things that are good for Harry and Meghan's mental health, constantly embroiling themselves in endless arguments with the British establishment is not one of them. I've concluded therefore, they have a different reason for continually popping up with more to say and pontifications to distribute - and it sounds a little like the opening of a cash register.