1.9% of steam users is not a majority it's less than one in fifty so your attempt to force FDEV to give you what you want by threatening a boycott simply won't work. You just don't have significant numbers.
We don't have the data to assess significance. There's some fun fuzzy data out there, like the reddit poll which suggests surprisingly high VR usage rates amongst the hardcore, for example. But ultimately we can't know the overall picture. So you stating a boycott would be pointless is based on assumptions, just as much as the other end of the scale is (IE stating that VR ownership is a major strand of ED's playerbase).
Could VR Cmdrs not buying EDO or Arx affect FDev's revenue stream? It doesn't seem so improbable that it can be ruled out concretely.
But I also don't think it's the point. Most of the Cmdrs who are planning not to buy EDO (or spend more on Arx), are doing so simply because they don't want to play a non-VR version of ED (and they don't want to reward a company that's not providing a game that they want). There's nothing abnormal about those acts. Not buying a game that you don't want is perfectly normal
Even if you did have the numbers most VR users would simply buy in anyway and hope VR would be implemented fairly quickly since the whole boycotting thing to force change is absolutely an edge case scenario.
That's an assumption. Certainly the reddit poll suggested a spread of usage styles (with those who play primarily in VR being just under a quarter of polled Cmdrs, but others more willing to play both flatscreen & VR). You can't possibly know how that former subset will react though, for a start. Not buying the expansion would be a perfectly rational response for them.
As a VR-alone player, that would certainly be my response, but as I've got an LEP it's somewhat moot. (The sentiment of "can't go back to flat" is far from an unusual one amongst VR-heads though, and would quite possibly prevail amongst the above subset of players).
Its an expansion for a video game, its not that big a deal.
It is to those who like the game in VR. You can't gatekeep people's tastes young Stig