I think that their whole move and plan is perfectly fine and that they are dead right. They know that there isn't really a place for them in the royal family long term, and that indeed, there isn't a place for ANY royal family in this country long term, so they are proactively setting up shop on their own.
The website is beautiful and explains who they are and what they (intend to) do very clearly to an international audience. I am a web designer, and used to use The Tig as an example of a gorgeous blog to show my clients! I'm delighted to see that they used the same firm again. It's gorgeous.
BUT
The language of the website presents the whole thing as a very done deal, and (speaking as a fierce republican who feels that the whole lot of them should be evicted & every penny and brick they "own" returned to the state) it does feel massively presumptuous of Harry to make all these sweeping statements essentially on behalf of the royal family WITHOUT CONSULTING WITH THEM.
I get that talks were underway, but wtf was he doing cracking on and publishing the website and all those statements about his & M's role in the context of the RF before any of it had been actually agreed?
He is a member of an archaic and obsolete organisation, but if he wants to trade under their name, he needs to follow the rules and submit to the hierarchy - a hierarchy I abhor! But nonetheless, the entire website is EMPHATIC about his continued support of it. So I dunno. It's being badly handled by his people/him.