You keep insisting that you understand, but the upshot of understanding would have been acknowledging the specifics which you haven't done despite clearly having plenty of time and energy to reply.

Instead you've tried everything from saying I need to "get a sense of humor", to character attacks, to insisting without specific explanation that I "don't understand", to declaring that you "don't care", to declaring that no amount of information will make you acknowledge the inaccuracy of your own comments.

So you haven't succeeded in changing the subject of the conversation, except in the sense of turning it into a tutorial about why you can't make wrong into right with character attacks or declarations about how much you don't care.

He’s right. you’re not saying anything that actually furthers the conversation or counters any of his points.