People without legs participate in runs in the Paralympics, and some of their prosthetics are quite bouncy. I wouldn’t be surprised if at some point they beat runners with legs using those prosthetics.
I would prefer for them not to compete with “regular” runners because the balance between having legs and bounciness of the prosthetics shouldn’t be the deciding factor when determining the winner.
Letting people with prosthetics compete with each other and not with people with legs is fair for both groups.
Fairness in any kind of competition is a weird illusion people are obsessed with maintaining.
Removing categories in sports would result in podiums filled with men, which is a root of that problem.
It is fine if you don’t mind it.
I prefer categorization for men, women, trans men, trans women, paralympics, and I would even leave that amusing category of not-tall-man basketball because they in fact cannot compete with tall players but they still can compete among themselves.