Ric Flair, Shawn Michaels and the Undertaker are all proof of the real reason why Hogan got booed. Let's look at the excuses given:
>he got booed for saying the word years ago
Every wrestling fan by now knows Flair called Teddy Long the word. Teddy's video on it has over 3 million views and has been out for years, and there's no reason to believe he's lying about it. Yet Flair still always got pops in WWE long after that video was released
>he got booed for supporting Trump, and California is a blue state
Taker openly supported Trump, and he didn't get booed during his appearance on the very same Raw show. He got a huge pop
>he got booed for being an asshole backstage for years, screwing other wrestlers over and holding them down, and playing backstage politics
Shawn Michaels is infamous for this, yet he never got significant boos in his post-Attitude era years besides when playing a heel
Hogan didn't get booed for any of the above individual reasons
He got booed because of ALL OF THE ABOVE REASONS. He's the worst combination of all of them. The fans are willing to let one, maybe two of them slide, but not all three