Demand lists and redline lists suck and make people look like assholes, regardless of their gender, and even when there are legit red lines you wont go near because of safety, which none of these are.
In this case, a no fat chicks rule is gonna trigger every woman's societal induced neurosis about weight and body dysmorphia, you fucked up, never say that one out loud to a woman. It marks you aspart of the body dysmorphia problem.
No single moms, reasonable if you dont want kids or to be involved in raising one, but still makes you sound like an asshole. Not wanting or having kids is taboo even now, look at the shit that the republicans have been throwing at Kamala Harris. Rejecting a wonderful person because they have a kid is also dickish. And, depending on your age and where you live, the odds of finding a partner who does not have kids could be low to zero anyway.
No dating apps? What planet do you live on? Dating apps are everywhere and for some people the only option for dating. People meet spouses on em. Oh just not hookup apps? Then this smells like slut shaming, in which case fuck you. I love sluts; don't shame them or you will piss me off personally. If you want a virgin, become a religious fundamentalist and possibly a pedophile. People have sex and if you have a problem with that it's probably a red flag.
Sorry for the rant, this is greentext so probably all lies anyway, but it set me off.