I suspect this has to be more to do with particular things said on these episodes that may make Spotify legally liable, rather than a blacklist of people. Eddie Bravo and Joey Diaz have been on tons of episodes other than the ones listed. I can't even imagine JRE without Joey as a regular.

Some people strike me as particularly odd for blacklisting: Louis Theroux, Brian Dunning and Rickson Gracie must be politically uncontroversial, unless I'm missing something.