You think the lack of VR has kept people from having opinions about routes they haven't climbed or posting factually incorrect garbage on MP?
I am well aware of armchair climbers posting incorrect information on Mt. Project. Not just route descriptions but also on other topics that they have no experience. Seems that about a year of experience is all it takes for someone to be an expert on climbing now days. I think this is due to all of the information that is readily available on the internet and social media. You can now find helmet Go Pro footage of most all moderate trade routes on You Tube. For instance, climbers can now watch someone climb every single pitch of Epinephrine online.
Used to be you could talk to someone about a route and they could not bullshit you whether they had climbed it . With a few questions you would know if they were full of shit. As part of climbing ethics people did not claim to do things they had not done. My stance on climbing and liars is if someone would lie about climbing a route what else would they lie about? This type of lying is just to stroke someone's ego. A liar or someone not accountable for their own actions is not a good climbing partner and is potentially very dangerous.
So to answer you question I don't think lack of VR has kept people from posting incorrect info but I think we will see an increase in this behavior in the future. Especially if people are able to virtually experience the outdoors in more detail.
Ultimately I really do not care but with one exception, that being posting route information that could potentially injure or kill someone. I think that some people posting incorrect information do so with the best intentions in their minds. They just want to participate by posting something.