Funny stuff......
In the literal question, speaking of ski ability, and skis....not other prowess and "equipment"...among my adult kids, zero chance of a serious relationship unless the other half can really ski. And ski well, anywhere. Just not happening. Skiing is a huge part of who they are, and neither has wanted a "ski project." My daughter tried once!
A number of years ago, our son had a ski date with a yoga model. He said she was bright, funny, beautiful, and proclaimed to ski well. Ahh...no. Went nowhere.
So my wife made the comment that it was fine, as he really needed to end up with somebody who understood him an shared the passion and lifestyle. Keep in mind, my wife has skied since age two.
His now long time GF is a tremendous person. She's the best. He adores her. And she was one of the very top junior racers in the country, as he was. He's on snow 250+ days a year. She gets it, and she loves to ski anything with him, whenever they can. Very cool relationship.
On some level, yeah, ski size matters. I avoid ALL other questions! They're healthy, happy adults!
Now I'm 60+ and one of my contemporaries has a new lady friend who can really ski well. She's 29. In her case, ski size might matter. But I can guarantee that the addresses of his ski houseS, and the size of his wallet matter more. My wife jokes that he's a lot taller when he's standing on his wallet!