Stan Lee is The Man.
Kirby was The King...then he went back to DC.
I can see why Stan may dislike DC. His partner-in-supreme comics creation lost his nuts, created a terrible villain and generally lost all of what made him The King.
Thankfully, more recent authors have wrote that terrible villain to his proportions so we can all properly laugh at his weak he is.
What Stan says is Law. Get over it.
Until you do 1/100th of what Stan has doen for comics, you can't talk.