It is often used by antisemites to disguise their antisemitism as valid criticism of zionism.
That validity ends, once you attack any Jew for their Jewishness, attribute any wrongdoing of Jews to their Jewishness or straight up insult other people as "Jews".
Some Australian and Papua New Guinean Languages have this feature.
Just like spanish marks tense in its verbs, these languages have to alter the form of the verb depending on the level of "firsthandedness" of the thing they describe. Sometimes, this isnt even optional
Mate, english is my second language too and this is not that confusing.
Singular they/them has been here for hundreds of years and using it as a gender neutral alternative to she/her and he/him isnt shit, its part of the english language.
Thanks ^^