Dessert Nomad
Adventurer
Someone without a horse in the current race can still have valid opinions and offer input, I would hope, in order to explain why they're not playing the current (or proposed) version and what it would take to change that.
Otherwise, all you have is a survey of what colour to paint the walls after the room's already built, when the real survey and discussion should be on what size-shape-function of room to build in the first place.
I don't think the input from people who have never actually played the game is valid or useful input for improving the game. If they have no actual experience with playing the game, then there's no reason to think that their suggestions for improvement are even relevant, much less that they're a good idea that will make the game better for people who actually play and enjoy it. I don't think "Have played the game in actual multiplayer format at least a handful of times in the decade since the game came out" is some unreasonably hard bar to set for considering input useful or valid.
It's more like surveying people who live in Poland about what color to paint the walls of your house in Virginia, why would you care about the input of people who aren't ever going to be in your house? Or an all-animal-products restaurant surveying vegans about how to format the menu and what drinks to carry, since the vegans are not going to eat there anyway.








