The parts you quote do not equate criticism of Israel with antisemitism.
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.
It also isn’t racist to be against the existence of states in general and believe in a world without borders. But to say that Ukraine has a right to exist, Ireland has a right to exist, Palestine has a right to exist, Greenland has a right to exist - only Israel does not have a right to exist is antisemitic.
No state should discriminate against people based on their religion. (And absolutely no state has a right to exist. People have rights, not governments.)