Jean-Louis was a long time Apple exec who started a company to build an OS called BE which briefly was in vogue at Apple before they decided NeXT was a better choice. He's pretty much still an Apple guy at heart despite losing out.
Nope, just looked him up. Apparently he was an Apple exec in the 80s. Your point is?
He also later founded and ran an Apple competitor that built highly respected computers and a highly respected OS.
Dismissing this person's opinion simply because they don't agree with an unsubstantiated attack on Gruber makes no sense.