I tag it that way for people who want to block the tag. That, and I put in the tags, asking nicely, for exclusionists not to interact. I don’t believe that I’m entirely right or wrong. (Also, I know the definition of discourse. It’s a pretty common word.)
It’s not that I can’t handle someone interacting, it’s that I’d prefer not to have someone invalidating the struggles that come with asexuality and aromantic orientations in my messages or notes.