Anyone who spits on the roots that got them to where they are now deserves to be punched in the face.
AJJ from PR also comes to mind.
Sometimes, some people have to completely discard of what they did for Tokusatsu, etc., to achieve even more fame & popularity. Doesn't mean that they hate what they did, though.
Look at Masaru Nagai, the actor who played as Tatsuya (TimeRed) from Timeranger, for example.