I haven't got to watch the game and unsure if Kim wants to, but I will today sometime. What I posted that you referenced was "that if he was in the corner" like Fletch and Lance in that set, then he would be a very late option as were Fletch and Lance. That set is all about Braden, Zach and Mason. I doubt I find a set where Myles is inserted into a Lance or Fletchers position with the same options and reads. If not then the obvious question is whether he moves quick enough for such or some other concern whether right or wrong? I don't know that to be the case, but it does not appear that he is placed in that position as you state.
What he could do I believe (and possibly other things I don't know?) is if Zach is low to feed the post and then relocate a couple of steps for Zach to kick it out hopeful that his man loses him by digging or not fully facing him as some do to ensure 3pt coverage. There is not a lot of reads, not a lot of quick decisions just a good pass inside and relocate as warranted. Pretty simple "IF" in that situation and Zach is better with the ball. This year, Zach is not down on the blocks as much as last year and so we don't see quite as much of that this year
Just for fun....had Painter used the portal..