1. The RF tried to prevent Harry and Meghan from leaving. They tried to work out a compromise. However, the RF’s position was stay or nothing THINKING that Harry and Meghan could not stand on their own. The RF though Harry and Meghan would capitulate and stay,
H&M wanted to officially represent the royal family part-time, as it suited their own schedules, while retaining full-time security (at a grossly inflated cost due to living in a foreign country, perhaps paid by a foreign government who understandably didn't want to foot the cost) and being free to spout off about politics and "correct the record" the rest of the time. That would never have worked. Letting them pop in occasionally for events might have been ok, but they still would have had the same restrictions as full-time royals. H&M have been clear that they found those restrictions unacceptable.
2. Harry tried to give of his time (not funded by the taxpayers). He did not want to burn bridges. The RF wanted to. Again thinking that Harry and Meghan would capitulate.
If Harry doesn't want to be a working royal, he doesn't get to officially represent the Queen by way of royal patronages. This isn't a new rule they just made up for him. If he was either so clueless or so arrogant to assume long-standing policies would be changed or ignored to suit his feelings, that's his failing, not anyone else's.
3. The RF did not anticipate that fair-minded friends with deeper and well-earned pockets would come to their rescue.
I doubt the RF was terribly concerned with whose mansion they were staying at. They have far too much money to be in genuine need of "rescuing" by anyone. If they find themselves in need of financial rescue because they somehow managed to piss away $30 million in less than a year, then that too is their own fault.
4. Are you certain they want a Royal Christening? Who told you so? They did, did they? Take a moment and ask why they would want a Royal Christening for Lilibet. They did one for Archie because they had to. They never even told you who the godparents were. You really think they want one for Lilibet? Why? What for? She is officially recognised as in the Royal line. What would the christening achieve?
You're right, they haven't officially confirmed it. But they rarely officially confirm anything, including things that could only have come from them personally. If they don't want people to assume that anonymously-sourced news stories are correct, they shouldn't have made such a habit of using those same stories as an alternative to press releases. Remind me, how did we learn all about all the flowers used in the wreath for Philip's funeral?
5. Harry and Meghan must absolutely use their Royal titles. Why should the victims be punished for standing up for themselves? What crime did they commit that they are deserving of being pursued to destruction? Are they alleged to have raped underage trafficked girls? No? Oh it’s the heinous crime of saying enough is enough and standing up for yourself and you family. How dare they, how very dare they.
Telling someone "If you want to make a living by denouncing the royal family, you shouldn't make extra $$$ by using a royal title" is hardly "pursuing them to destruction."