I am wondering how long they can keep provoking until someone gets angry and destroys them for good.

Then I can imagine how some people will react and complain that US, UK and many more are bad to houthies and there will be protests all over the world saying justice to houthies…

Have you not paid attention to their situation in the last decade at all? They’ve been bombed, starved to a famine and everything else that could be thought up with the help of Saudi Arabia and the US. If you think people have been “playing nice” with them so far you’re incredibly far off.