The "hosting terrorists" part would be referring to the Houthi soldier he interviewed on stream. I personally don't have a problem with having controversial people on for stuff like interviews but the problem was more that Hasan was trying to make him seem more appealing and only giving him soft-balls.

The Houthi guy was talking about guarding captured foreign merchant ship crews and making them dance and Hasan was talking about how much fun that must have been.
Hasan later cut him off and redirected when he started talking about how the knife on the shelf behind him can't be sheathed until tasting blood.
Hasan ran out of prepared questions pretty quickly so he started asking him about what his favorite anime was and what fast food they had available there. He was just generally trying to make him seem relatable.
Someone in chat wanted Hasan to ask about if they would release the hostages if peace or a ceasefire was negotiated and Hasan something like "I'm not asking him that, of course he would".
He later described it as "like talking to Anne Frank".

The "blasting propaganda music" refers to him showing a Yemeni propaganda music video on stream to a guest and viewers. The lyrics were mainly about all the weapons and war supplies they wanted, and what they would use them for. It honestly was just bizarre and left everyone confused since there wasn't really context for showing it.

I love how people (rightfully) called out Pewdiepie for jokingly paying guys to put "death to jews" on a sign, but when hasan does it unironically its okay

Not sure if the "Death to Jews" thing is referring to something specific or just that Hamas is very vocally anti-Israel.

[–] NewDark@lemmings.world 3 points 3 days ago* (last edited 3 days ago)

The kid isn't a Houthi. They flew out civilians to the boat as a sort of tourist attraction.
He was trying to humanize a human, oh no how terrible.
While the kid isn't Houthi, they've been incredibly clear their interference is entirely based on solidarity with the Palestinians getting genocided. They are attempting to apply pressure to stop it, which I think is a good thing (even if it might disrupt the global flow of treats).
Yemen was being genocided while he was a child, and the kid is a survivor of the genocide (one the US funded and facilitated). The comparison isn't perfect, but apt.
He says every damn day how antisemitism isn't OK, and he doesn't agree with the flag. Do remember Israel is the one cynically hiding behind Judaism for the actions of their state. This isn't an excuse, but it is contextually important for why Yemeni people might hold antisemitic opinions.