It is possible none of us will live to see Czechia vote against the interest of Israel as all parties support it and there is pretty much no organized pro-Palestine movement. Israel says we’re their top partners in the eastern hemisphere, which means a lot because most countries are in the eastern hemisphere, including itself. At least, aid toward them is not nearly as popular among politicians and citizens as for Ukraine (we have a sizable, well-behaved Ukrainian minority already and took the most refugees per capita at the height of the crisis).
As for why pretty much every politician is either oblivious or bootlicking Israel: see my comment under a post about the shredder escapade 4 months ago
What’s funny is that lots of people outside Prague are racist and most of them make no effort to hide it. Our nation very much prides itself in dark humor and very few topics are taboo, we even have racial and Auschwitz jokes. However, most people are oblivious to what’s happening in the area so even if you made a really good point for Palestine and composed it into a joke, it’s not going to resonate with any audience. Maybe university students (though a great deal of them are pro-Israel so you might get cringey faces and boos).