Jabotinsky was arguing for forceful colonization, not outright genocide, but "colonization" was the other term that you objected to. And yes, of course, there are different brands of Zionists - but the fundamental believe of that ideology is that Jews are entitled to have a state of their own on that territory; Jabotinsky was simply the one who pointed out the obvious consequences of that desire and denounced those who believed that they could somehow come and take the land and get no pushback so it'd all be peaceful.
It should also be noted that the ruling party, Likud, is specifically a Revisionist Zionist organization, with an explicit historical link to Betar, and founded by Begin who was a Jabotinsky disciple. So this isn't just some kind of random coincidence; what we're seeing Israel doing in Gaza today is a direct consequence of taking Jabotinsky's main premise and running it to conclusion.
It should also be noted that the ruling party, Likud, is specifically a Revisionist Zionist organization, with an explicit historical link to Betar, and founded by Begin who was a Jabotinsky disciple. So this isn't just some kind of random coincidence; what we're seeing Israel doing in Gaza today is a direct consequence of taking Jabotinsky's main premise and running it to conclusion.