I think there are two distinct things you can disagree with in the parent comment. The first is whether the use of the phrase "tech bros" is defensible; the second is whether all the people who are supporting VR are those who can be called (rightly or wrongly) "tech bros". I think you're conflating those.
I've always interpreted the term as being gendered, but not gender-essentialist; there are plenty of women who are "tech bros", because it's referring to a culture and set of ideals derived from gendered spaces like fraternities, but not those spaces themselves; plenty of "tech bros" were not members of a college fraternity, for instance. It is true that the vast majority of tech bros are men, for many reasons relating to society and gender. It's certainly possible that the term could get inaccurate, in which case I at least would favor a different one, but it works for now.
Under that definition, "there exist women who do behavior X which you attribute to tech bros" does not imply "attributing behavior X to tech bros is incorrect".
That leaves the question about whether "tech bros", such as they are, are the only people rooting for VR. I think that's fairly unlikely to be true, and yes, your points seem do rebut that claim. (That said, it's probably worth mentioning somewhere here that while women exist in VR, the industry seems to be biased towards an assumption of men, from various apps placing virtual objects at heights that are difficult for most biological women to reach, to the entire concept being based on a model of 3D visual processing that is more common in biological men: https://qz.com/192874/is-the-oculus-rift-designed-to-be-sexi... Pointing out the obvious truth that VR seems to be male-dominated is not excluding women, and your question about bigotry seems to be attacking the messenger.)
But even if it's misplaced to associate the entire VR industry with "tech bros", I don't think that invalidates the concept of "tech bros" itself.
Finally, I think it's inappropriate to imply that a good-faith participant doesn't belong here.