You can be a Zionist and support a 2 state solution, you can be a Zionist and want a ceasefire. You can be a Zionist and demand the government does everything to get the hostages home- including whatever concessions are necessary. You can be Zionist and be opposed to Bibi Netanyahu.
Plenty of Zionists in Israel are all those things but if you suggest they can't live in their ancestral homeland- you will get a very different reaction.
You can also have Jews who are assimilated and have little connection to their roots, can be be far right to far left and follow a variety of causes.
Your anecdotal experience of meeting some "lovely Jews" at a protest does not negate the fact the vast majority of Jews are Zionists and the vast majority who aren't, still believe Jews have a right to be there, just they want a theocracy not a secular state.