But they'll never be able to trust him again, he's shown what he's really all about and it's not a sense of duty or pride in the Crown, he also alleges that we are a racist country, why would he want to represent us in any capacity. He wants freedom, let him have it.
Harry strikes me as the sort who can't think or speak for himself. Until he met Meghan, we never heard any squeak of him being unhappy with his lot. In fact, the first we heard of it was in 2017 when he said nobody in the family wants to be King or Queen. This sounds like the sort of stuff that would come of Meghan's mouth, not his. She would've been getting in his ear from day 1, instilling paranoia and hatred. I've met a handful of Meghans in my lifetime and they're all the same - this is what they do!
If my theory is correct, and he subsequently meets a strong woman who he falls for who makes him see the error of his ways, he'll likely do a complete 180 degree turn and say he was blinded/coerced, that he didn't truly mean what he said whilst with Meghan, and he has since seen the light. There is always hope this will happen - his astro chart when done a few years back pointed to a horsey woman, slightly older than him, who has her own money and loves him for himself, being his ideal match. Mind you, the same woman who pulled that chart also said that the wedding to Meghan absolutely would not go ahead (she said that leading up to the day before the vows).
I won't be at all surprised if Harry does "stay on for a bit" following the funeral to "help the family" ... and then that gets extended to indefinitely, during which divorce proceedings commence. I have sensed a bit of an 'off' vibe about him of late ... as if the "freedom" (not really though - Meggy would have him under her thumb constantly), has worn off (or maybe he just craves a quieter life, without constantly being in the papers, like he used to have?); I think just being reunited with his family - especially if they do warmly welcome him - might be enough to make him realise that it's with them he should be.