I was in 8th/9th grade when he was on top of the charts and I can assure you it's not revisionist history. He was laughed at and clowned by Hip Hop heads AND artists. Major label artists too, not angry underground backpackers:
Run-DMC and EPMD openly clowned him in a video that was on heavy rotation on MTV, BET and The Box. But of course he went at the white boys:
Yes he was connected in the streets of the town and wasn't a punk. That's how it goes in Hip Hop: the ones that you think are "soft" are actually the opposite (Hammer, De La). He was dissed and clowned because of his image and crossing over to the pop audience, which was a big no-no back then.
Every self-respecting Gen X Hip Hop head including myself will deny deny deny to their grave that they bought Hammer and Vanilla Ice albums. Those 30 mil they sold must have all been bought by Nebraskan suburban moms then.