If this is of concern to you, why are you using snaps? And why Ubuntu? What's the value-add over Debian?
The idea that you "misjudged who actually uses Linux" was based on the assumption that you think a product should generally cater to its users. If instead you think most of the users should leave, then okay, that's a valid opinion, it's just surprising.
People will never buy linux but they might buy computers with linux at some point just like they have bought phones with it. Android had things that iphone didn't have and at a much cheaper price point thus linux based phones are everywhere. I wish steam boxes had taken off.
That said, I don't think Newbie friendly and power user friendly must be at odds with each other. If you can figure out what the sensible defaults are, and provide simple toggles to customize things, you can cater to newbies, average users, and power users alike.