Its true. All legacy characters get a degree of hate if they replace a character, but its also true fans get much angrier when they think a "political agenda" is involved. Nobody called Ben Reilly and Superior Spider-Man a "pc agenda" or "pandering to white people." Their race wasn't brought into the outrage.
People can keep repeating they just hate "bad comics" and aren't acting racist, but when I see fans angrily hating on characters and bringing their race into the issue I can't take it seriously.