This seems to be a letter written to a newspaper where a grandmother (presumably a conservative and not-very-educated one) complains about the gay agenda, thinking that "Homo Sapiens" has to do with homosexuality.

Good for a laugh, and maybe a transient sense of superiority over the yokels.

But do we know this is real? A lot of the stuff around it is clipped. This could be from a satiric newspaper. This could be a troll. From what we see here, we have no idea if this is real or not. I don't doubt that there are people who wouldn't know what "Homo Sapiens" means, but this might not be by that person.