Not sure what you think Neville did that you think was childish or moronic, he does too many of those things so you will have to be more specific

but to be fair - it seems clear that Forest banned Gary not for anything he said about Forest but because Forest's petulant owner got pissed about what Gary said about him personally. And in that instance, I would argue Gary was right - walking onto the pitch and publicly yelling at your head coach, is indeed scandalous and unacceptable behavior for a club owner. Ironically, what got Gary banned, was one time Gary was probably correct