IME, it's not unusual to start the eventing pre-season off with some straight show jumping. Some eventers go to the pre-circuit week(s) at HITS Ocala for this. Going to WEF is probably more expensive and less convenient, but I assume Marilyn is there with her jumpers.
Mr. M. might be a less-clean jumper without the benefit of a dressage test and an XC run. This would not be unusual.
If he is on the market again, that's interesting. IIRC, as of not long ago, KOC has written/said something about him not being fully paid for or not fully syndicated -- does this have anything to do with the sale?
FWIW, I don't see anything wrong or weird or rude about sports fans asking questions and speculating about people, horses or happenings in their sport. This is what is is to be part of the larger community of fans and supporters.