I'm not sure how you'd know that; since vim, emacs, and other more traditional options don't include telemetry we don't know how many people use what editors. In any event, Windows remains the most-used (desktop) OS, so I've long since acclimated to people living with the suckage.
The data is no doubt biased, but given just how far ahead vscode is, it would need to be a very heavy bias to see vim/nvim come out ahead among all developers (however we define that). It gives us some information, but I agree doesn't tell us what the proportion is among all developers.
Popularity is not a great metric of goodness, unless we want to come to terms with the fact that Limp Bizkit records are around 3x as good as VSCode (and that's despite the fact that they aren't even charging people for VSCode!)