I don't think people in general are angry with Harry.
He was always popular in his youth, and his marriage was very popular indeed. Look back at the coverage at the time.
And there was considerable support for stepping back - remember that ER II had actually offered them a period of quieter start to royal duties, and had said M could continue acting; but they rejected this in favour of "hit the ground running". It seems that ER II had the better idea of how to acclimatise people to representational duties, but did not impose it.
Yes, there has been a considerable loss in favourable opinion about H&M, notably since the interview, series and book - all of which are very much their own chosen words (and which do not necessarily bear any resemblance to verifiable events, which torpedoed their credibility).
But that's not the same as "anger"
There are those on the internet who bandy about words like "anger" and "hate" and promote division by insisting there are two "teams", and that the British media is somehow unified with an agenda. They even misrepresent the Royal Rota as part of that.
I suspect they may not be based in UK or any of the Crown's other Realms and Dominions. They don't seem to have the same nuance as those who chunter on about the RF and have done so for decades. They don't even seem to realise that this RF topic on MN predates H ever meeting M by a good 6 or 7 years.