Greentext

If you label a relationship as platonic, that usually serves to make it explicit that there's no romance or sex going on, yes.

When talking about attraction though, we're in the context of the split attraction model (look that up if you're interested), and there, platonic attraction is treated not as the opposite of sexual attraction, but as its own axis for basically saying "how much do I want this person to be my friend", without saying anything about how much you're sexually attracted to the person.

If you want to properly reconcile the terms, think about it like this - a sexual/romantic relationship is one where the sexual/romantic attraction between the partners is the strongest force, whereas a platonic relationship is one where their platonic attraction is the strongest force.

I personally actually have a hard time seeing platonic and romantic attraction as separate axes, for me, romantic attraction just feels like an extension, a stronger form of platonic attraction.

I guess platonic isn't the right word but it's the closest I could think of at the time. I guess maybe emotional attraction? A person I care deeply about who I enjoy being around and feels the same towards me. Basically a relationship for me is just a best friend who I also happen to have sex with and thats what I look for personally.

But the main thing is the lack of sexual attraction. Other sex favorable ace people may deal with things differently. I personally know one asexual aromantic woman who doesn't care who she screws because like I said before, a lack of attraction doesn't make people unattractive, it's just null. So for her basically everyone is the same so she'll just take whoever to meet her needs whenever she's horny and just be done with it. From what I've seen in the ace community that definitely isn't common but it is a good example of just how different the the stance on sex between different asexual people can be.

I’m queer and fully agree

Basically.

There are grey-aces (whom are still aces; black-stripe ace sometimes is used to refer to those with no sexual attraction) whom experience some sexual attraction some of the time.

But there's a lot of aces who are surprised to realize sexual attraction is something people actually experience.

Sexualities generally refer to sexual attraction. Homosexuals are sexually attracted to people have the same gender, not to repeating the same sex acts over and over and heterosexuality is about attraction to people with different genders, not to novelty sex acts. Pansexual does not mean attraction to pans not to literally everyone or everything. Taking the words too literally is not really useful.

The differentiation of the ace/allo axis and the sex-favorable/sex-repulsed axis is particularly useful for aces, but it still has its use for allos as well (some people who have PTSD related to sexual activity may be sex repulsed, but can still experience sexual attraction). Lots of reasons to engage in and enjoy sex other than attraction to a specific person. Even allos often engage in sex with those whom they aren't attracted to.

The major ace subreddits regularly had issues with sex-favorable people complaining about all the posts being sex-negative and sex-repulsed people (sometime simultaneously) complaining about too much sex-positive content. Would be more amusing if those types of posts didn't waste so much space...