Soooooo, the other argument is that parents should shape their children sexually? That's really gross!
https://twitter.com/QanonAnonymous/status/1511856476352000000
"a conclusion or statement that does not logically follow from the previous argument or statement"
It does follow a logical pattern, though, therefore not making it a non-sequitur.
So how do you expect people to know or learn these things then if not through education? The argument the person is making, along with their name "harm reducer" doesn't make much sense.
https://en.wikipedia.org/wiki/Harm_reduction