Trust me when I say that stating how I really feel about FS isn't consistent with forum rules.
I agree, it can and probably should be used as a training aid, that he not only used it for marketing reasons, and then couldn't even acknowledge his mistake, publicly insulting those who took offense at his actions should be a clue as to the quality of his school.
This of course is a wholly separate issue from the abject mediocrity of FS pedagogy. They give people a false impression of competency and when I've shot with those who were trained with FS, I've had to do a whole bunch of remediation. In turn the FS alumnus is usually appalled once he/she is shown the proper way.
I don't care who a shooter goes to train with, usually any training is better than none. While there are 1 or 2 schools that I tell people to shy away from. FS is the only one that I'm adamant about. When I explain why, people are invariably grateful as they were shooting neophytes and had no idea.