I see more Israel/Ukraine flag combos, but I have seen a few of those as well.

I sorta get it, if someone were looking at both situations purely as "resistance fighters against their oppressors" They aren't actually comparable in that way at all, but the mental gymnastics required for somebody with only a surface level understanding isn't too great. I feel those might be the people that you could have some hope of educating on the realities of the situation.