It also sounds like the person is saying that you can't have a super great sex life unless you're willing to date trans people because you're taking a "Dumpy Ass Shit" cis over a "Super Hot Trans*" just because you're uncomfortable that your girlfriend still has the dick she was born with or your boyfriend is still sporting the vagina he developed in utero.
I don't see anything about whether you can have a great sex life or not, merely that there is something odd about genitals overriding all other considerations.
Everyone has every right to be uncomfortable about any aspect of sex, certainly genitals included. But there is a weird paradigm going on that says that the default attitude to take is that the genitals must be right or everything is wrong. Pointing out how silly that sounds seems appropriate.
It's not talking about dating, it's talking about the act of sexual intercourse and how cis people are soooooooo awful for having preferences regarding their sexual partners.
It talks about 'potential love interests' and all that. That seems to go further than sex, even if sex is a big part.
It's also making a broad, generalized statement that ALL cis people are like this. As if only someone who's trans or agender (like A. Stiffler, the artist for Chaos Life) is capable of being sexually attracted to people based on something other than genitalia.
Actually, fair point, the generalization to all cis people is uncalled for.