To those asking, out of legitimate curiosity and confusion: "So a qpr is the platonic marriage-equivalent? The aromantic and/or asexual equivalent to a romantic partner?"
I hereby offer this gentle: "no.♡"
This is a common misunderstanding, so allow me to explain:
A friendship, a romance, and a qpr are not "tiers" of relationships. A qpr is not a "leveled up" friendship. Society imposes a hierarchy of relationships that puts romance at the top, and 'mere' friendships below. Relationship anarchy says: "Fuck that. Friendships are no less important. Romantic relationships are not the only form of meaningful connection."
Friendships can come in many flavors of closeness, from the casual peripheral friend, to a lifelong friend who you'd give your life for, to a friend you may share any variety of intimacies with. But the exact nature of a friendship is not obvious just from the word "friend."
Similarly, the exact nature of a given qpr is unique to its participants.
There is no particular element that defines a qpr. The only thing that really defines a qpr is that the participants define their relationship as such. A qpr may involve commitment, or certain kinds of intimacy that are often associated with romantic relationships, but it doesn't strictly have to.
This is because there is no specific 'signifier' of a human relationship that will allow you to immediately determine that said relationship is platonic, romantic, or otherwise.
For example, just because two people have sex, does not mean that they are in a romantic relationship. They may be friends with benefits. They may be in a qpr. They may be strangers having a one-night stand.
The thing that is different about a qpr in contrast to a romance, is that wider society generally has expectations and scripts for romantic relationships. And this can be useful! It can be a convenient shorthand. But there isn't actually a convenient script for how a qpr is "supposed" to look. As such, it's unsurprising that there's confusion over what a qpr is, exactly.
So what should you picture, if someone tells you they are in a qpr?
Picture a relationship that is outside the traditional expectations of romance and friendship. The one thing the word "queerplatonic" does do is signal some kind of deviation from the usual relationship scripts and norms.
Welcome to advanced-level aromantic discussion of relationship anarchy and amatonormativity! ;)