Honestly I don't think it has anything to do with Steph or his wish to have his brother and dad inducted with him, I think (and I'll probably be wrong) the reason is Savage done the deal with WCW behind Vince's back and never showed gratitude to the McMahon family in doing so.
Gwladys you moan about celebs being in the Hall of Fame but all bar Carey had good reason for being inducted into the Celeb wing
Pete Rose - allowed himself to be tombstoned at two consecutive Wrestlemanias by Kane and stinkfaced by Rikishi at a third
William Perry - competed in the WWF/NFL battle royal at Wrestlemania 2
Bob Uecker - guest interviewer/announcer at Wrestlemanias 3&4, famously choked by Andre at 3
Drew Carey - non-descript appearance in 2001 Rumble match (only one who shouldn't be here)
Mike Tyson - part of the build for WM14, famous confrontation with Austin, DX member, counted the pin in main event
Donald Trump - hosted WM 2 years running in 80's at Trump Plaza (only venue to do so), involved in match/angle with Vince at WM23 (which achieved the biggest WM buyrate in WWE history)