Earlier quoted context omitted.
Do you not consider calling Israel's existence racist or comparing its actions to the Nazis to be criticism?
Legitimate criticism is about specific actions or behaviors. You could even say that you are opposed to certain laws, like the right of return. Saying that a nation should just not exist, regardless of how they behave or what laws they have betrays a deeper irrational hatred. Especially if there’s only one state that must not exist, while there are many countries with laws you would disagree with.
For example, apartheid South Africa was a racist endeavor.