How will it be a good thing for all Apple users since Apple users use iMessage and don’t give a crap about SMS or RCS?
Maybe it it was someone else besides google pushing RCS it might have a better adoption rate. But by this time next year google will have moved to another message app.
As a father of 2 kids you need to know that you owe him nothing. Just because he is your parent doesn’t mean anything.
Instead of thinking of him as your father think of him as a friend. And would you keep a friend like that in your life. If possible go 100% non contact and don’t ever worry about him again.