The "insane take" is the idea that sexual orientation is some extraordinary human characteristic which defines a person.
A non-insane take is that it's just a normal human trait whose effects are mainly limited to a few domains (or would be, if there weren't so many morons around presuming things about and treating people differently depening on their sexual orientation).
Only a nutter would think that, say the color of one's eyes or the size of one's feet make somebody a better or a worse person and, as I see it that's exactly the same for sexual orientation: outside the context of chosing romantic and sexual partners, sexual orientation is a totally irrelevant thing and having a positive or negative opinion on somebody based on their sexual orientation is about as rational as having it based on the size of their feet.
In my eyes the politics of treating sexual orientation abnormally amongst human traits, and dragging it into all sorts of contexts were it is irrelevant, is just an hypocrite distration from actually addressing those things that mater for the quality of life of most people, which is why this shit is so popular in the profoundly broken political systems of places like the US and the UK.