Saw that Gary Holt did an AMA on Reddit last week but I missed it. Someone asked if he would consider touring with the new iteration of Slayer that Kerry King puts together and he said no way, he will be too busy with Exodus.
Agree on all the points you made about the fickleness of the fans. I am only a casual fan of Slayer and could be wrong but have they ever really been a fan friendly band? Did they do meet and greets? Offer VIP packages or anything?
Still think they should have taken a younger band out as the opener on that last tour like Warbringer or Powertrip to pass the torch on to the next generation, but like many other 80s thrash bands they seem to have little interest in keeping the scene alive.