You are yet again, exaggerating. It is clear that believing that the state of Israel should be eliminated does not necessarily entail support for terrorism. It might, of course, but you are not justified in concluding that someone who believes the state of Israel should cease to exist necessarily supports terrorism. Perhaps it means a call for all Jews to be deported from the region, and dispersed to the rest of the world and giving the land to the Palestinians.
Am I suggesting that is reasonable? Of course not! But one cannot presume that calls for the end of the state of Israel entail support for terroristic acts.
You're correct in that saying a certain national/political entity shouldn't exist isn't always call for extremism terrorism (Example: There's no longer a nation of Czechoslovakia, they actually had a peaceful dissolution in the 90's and went their separate ways and broke out into two separate countries)
...and I'm sure most were glad the Soviet Union ceased to exist, and that wouldn't be a pro-terrorist stance.
However, with regards to this particular situation, I don't see any evidence suggesting that the Palestinians desire any sort of Czech Republic/Slovakia "shake hands and agree to go our separate ways" sort of arrangement.
When you combine both the the past 2 decades of attacks & rejection of 2-state proposals, with
the underlying sentiments the Palestinians have for Jews, in general...it points more to a "We want a 1-state solution, and in our solution, you don't exist in it" type of thing.
There's some serious hostility toward Jews in Majority-Muslim nations that we in westernized countries have largely been insulated from.
And while it diminishes to a degree when Muslims are removed from those theocratic environments, the numbers still aren't great.
For instance, the first link I provided shows that 93% of Palestinians believes the tropes about "Jews secretly control global politics and the banking system, cause all the world wars, talk about the holocaust too much". When you look at surveys from British Muslims asking the same types of questions, that number is still between 40-50%. They're just constrained in what they can do about it due to westernized British law having more robust legal protections than Islamic countries.
But none of this cancels out the glaring ideological self-conflict on the part of the American progressives (particularly the younger ones) by taking a pro-Palestinian activist stance on this.
For instance, if a GOP senator said "Jews control the banking system" or "Y'know, they talk about the holocaust too much to drum up sympathy" it'd be front page news for weeks and that senator would be rightfully labelled "alt-right". (Marjorie Greene's odd space lasers comment got a fair amount of press...as it should, and progressives were right to call it out). However, that seems to be lost on some of the activists who are currently sticking up for people who believe things that are even worse about the Jews, and in higher percentages.
It also flies in the face of their "de facto" logic (with regard to the concept of
original occupant land rights) they typically take when the subject is how Europeans came over and displaced indigenous tribes. The Jewish people are, in a sense, the "Native Americans" of that piece of land.
If this were a scenario where world governments came over and annexed off the land, once owned by a tribe and gave it back to them (because every other state was trying to kick them out and they needed a safe place to go), and displaced some white people who had later occupied (as in 400 years later) it in the process, and the white people started launching rockets at it non-stop for a decade, and the tribe had enough and hit back... I can't imagine these college progressives taking the side of the more-recently displaced white people in that hypothetical scenario.