Well, they're not just hitting shipments to Israel are they and it's certainly not "Yemeni policy" as the Houthis are far from constituting the Yemen government.
There are reasons besides Israel to use the Red Sea. Like, a little known thing named the "Suez Canal", it's kind of a secret, very unknown, you should look it up.
The line that they're running with is that Guyana is being exploited by the West and since Venezuela has asked very nicely to ignore the ICJ several times they are (going to be) justified in liberating them.
They don't want to stay in Russia, that's why. When Belarus sent migrants over their border they specifically promised them they would get them into the EU and flew them out from the middle east.
I frequently read much more stupid shit on Lemmy.