I don't dislike Monty Roberts, and I think that his efforts to help people understand horse behavior were probably done with good intentions.
Having said that. . .it's harder to respect someone who uses "drama" and "lies" about themselves and their family to sell their product or training method. He may still be a decent trainer, but if that's the case then he should just focus on being a trainer, not trying to draw sympathy (and money) by telling sob stories and lies about his own past.
"Parelli horsemanship is just like painting by the numbers. You need absolutely no skill. You just put this color here and this color there, and when you're done, you have ... a mess no one wants." mp