I understand those who have strong feelings about Grace being aroace, I do, because I'm aroace and loves Project Hail Mary, but I believe we need talk about stereotypes and unintentional acephobia in this fandom
First, something that is constantly ignored in aroace headcanons is that asexuality and aromanticism are two very different things and both have a broad spectrum that encompasses different degrees of sexual/romantic attraction, and this complexity is valid when both come together and form what is called aromantic asexual
"Aroace" in itself is already an umbrella term that also encompasses the spectrum, which means there is no "right way" to be acearo (not that there is a right way to be anything, but that's a discussion for another time), because the specificity of what is to be acearo is the lack of interest or necessity of defining our relationships in sex or romance
So NO, aroace people DON'T live in celibacy or are lonely, we are capable of having sexual, romantic, and queerplatonic relationships; yes, all three!!! But if an aroace person wants to live the rest of their life with their pet (aka like me) that's also totally valid, still as human beings, we can have emotional and physical connections, whether these are strictly platonic or not
Let's now demystify the idea that queerplatonic relationships are this pure sex-less thing
Queerplatonic relationships are often confused with celibate relationships, a mistaken assumption based on the belief that "platonic" in "queerplatonic" means "without sex", but asexual and aromantic identity is a complex spectrum, so obviously the dynamics in a queerplatonic relationship with an aroace partner would also be complex!
Talking with friends in the community, I realized that there are at least three general dynamics for QRP relationships: sex-favorable, sex-neutral, and sex-averse. In each of these, we find partial or total favorability and/or aversion to sex, so even within these same general dynamics, we see different levels of how much or even if the need for sex exists in a QRP relationship; not every sex-favorable acearo will desire to have sexual relations, and not every sex-averse acearo will reject it completely in their QRP relationship
And if anything, I'd say that aroace people might be the most kinkiest motherfuckers on this planet lol
So after explaining all this my last point is: aroace characters in a sexual or romantic relationship is NOT wrong
If you can't see the aroace experience as something deeper and have the need to fit being aroace into a stereotypical view, then you're being aceophobic
And specifically in Ryland Grace's case, it's even more annoying because he is NOT a canonical aroace character; it's just a popular headcanon, and like any personal interpretation about a fictional character, it can have different views that will not align with what is the more popular headcanons, or simply will be ignored by those who disagree with Grace being aroace
So please, stop using stereotypes to define what it is to be aroace and stop trying control how other fans engage with this character