If true, that's some real incel logic right there.

I think it's more of "I think X is bad, so fans of X must be bad too."

And the "dick sucking" strikes me as a bit of late 90's/early 2000's gay panic. I'm old enough to still remember when "gay" was synonymous with "lame".

It may be a projection of desire from people who have neither had sex nor their cocks sucked, so they paint both of those in the most negative way possible instead.