If we go further with this reasoning we should also shield Saudi Arabia, UAE, Vatican City, Maldives, etc.. from boycott.
Don’t they only accept ultra-orthodox conversions?[1] Good luck with that.
Jewish conversion is much more akin to a tribal adoption into the community than it is to conversion in the other Abrahamic faiths. For Christianity, depending on the denomination, conversion can be as little as saying you accept Jesus as Lord and Savior. And in Islam literally all you have to do is sincerely say the shahada and you’re Muslim.
Edit: [1] looks like there was just recently a supreme court case permitting non orthodox conversions, but I expect the Knesset will overturn it.
https://www.timesofisrael.com/israels-top-court-recognizes-r...
In fact nationality through ethnicity is the norm. What isn't common is that every country but Israel is being pressured to change their nationality laws.
I added that, while I read The Economist and other "thought leader" rags call for a liberation of Japan, Italy, etc nationality law, I have never read any respectable editorial arguing the same for Israel.
I did not mention anything about boycotts. but, since you asked, Japan and Italy were both boycotted (blockaded, actually) in the 30s for occupying territories and putting settlers there.