Maybe this is my chance to bring a nuanced answer to this.

First of all, these are all speculations, because you can never diminish a person down to what content they consume.

That said, let's have a look at Joe Rogan: he is a podcaster who started out with a solid baseline viewership and with a positive perception. His views were very moderate. Because of a lot of circumstances he became very popular fairly quickly (one of them is probably that people found his laugh funny). He then changed his topics a bit, got more prestigious guests on the show and also changed his views from what he let shine through in the podcast. He got very much more libertarian / conservative and his topics got a bit more bizarre sometimes. Nowadays a lot of people don't identify with him anymore and he has had some very controversial situations and takes.

So if someone watches such a person there's different reasons: maybe they do it for entertainment and don't take it seriously, maybe they take it very seriously and agree with him a lot. Either way, It's like watching trash TV: it's not inherently wrong, but it looks kind of weird to support it, if even just by watching.

Ok this is my little summary. Hope it helps. Also everything else old correct me if I got things wrong.

I don't know what the connotations of him are in East Asia. I think the question might be geographically biased against a good answer from most English speakers.

We can tell you what he means over here (and many people are in these replies), but that might be very different from his meaning over there, so keep that in mind.

He used to be interesting, for about 6 months. Now he’s just grifting the idiots at $10 a month on Spotify. The reason I joined Apple Music lol

This is a great video on the topic: https://youtu.be/sLaXSvpfDZs

You are not going to get a normal or accurate response to your question here, just so you know.

I used to like joe Rogan as a comedian. His entire set was basically the first thing my brain thinks of - an easy crack joke with some wit. But one cannot live one’s life according to the fastest, easiest joke you can conceive of. Deeper thought reveals most of these impulse thoughts as stupid, over simplified and with surface interpretation only. But he seems to just run with it, and has made that his public and political personality. My smart ass should not be making any meaningful decisions.