So, you're entire response effectively boils down to:

"Rather than actually read what someone has written, I am going to choose ignorance and make assumptions about what the text contains so as to avoid the possibility I may have to question my own viewpoint"

Look mate, if you wanna ignore what people say and not even bother to read it, out of fear that you might possibly learn something new, that's on you.

But later in life, as the world begins to advance past you and every day you feel more and more left behind, remember that these moments were all the sorts of points when people offered you a hand to help you catch back up and keep pace with everyone else, and you slapped that hand away.

I can't possibly speak as to why. Willful ignorance? Fear of confronting a mistake you perhaps made? Pride? Bigotry? Hate?

Who knows.

But in the end, you probably won't bother to read any of this either.

Nothing about what I wrote above was "nonsense" or "drinking the Kool aid"

It was a fairly basic grammar lesson, covering a topic you should have learnt about in gradeschool.

The fact something as basic as the topic of how gender neutral pronouns work, something that has existed for centuries in the English Lexicon, has produced such a response from you as to say I am "off my rocker", is fascinating... and sad.

I don't really know how to approach the concept of someone being informed that the words "They" "Them" and "Their" have been around for a long long time, caused them to respond with "you are off your rockers"

Mostly just makes me sad to see how deeply your school system has done you a disservice, and failed you. Shame really.