Jewish self-determination doesn't have to be incompatible with other people's self-determination.
Eh, the self determination of some people is often incompatible with the self determination of others. This is why there are countless groups of people living under minority rules; and why there have been so many wars fought over such issues.
Hell, even in the Israeli example (where it might be true to at least some extent); a 2 state solution would lead to incredibly ugly borders and/or a forced displacement of people only comparable to the partition of India.
I am of the (perhaps ideallistic) opinion that nation states are overrated as long as the rights of national minorities are sufficiently entrenched, respected and protected.
Though to be honest I find this basically irrelevant when talking about Israel (it's a lot more relevant when talking about other "national minorities"; like say, the Kurds, or even stuff like the Catalonia issue). In my view the existance of
a state of Israel should not be questioned since at worst it is a "fait accompli" and impossible to reverse (if you want to question Israel as a whole, you should find a time machine and travel back at least 100-120 years ago). The
current state of Israel is certainly questionable though.