Don’t a significant minority of people vomit or otherwise feel ill with VR? Is that adoption limiting?
Sadly (note, my opinion comes from being in that minority who can't get used to sliding), the current VR player community has settled on sliding as the best mode of movement, and berate developers who create alternatives, when they even create alternatives (Boneworks, etc).
Even many games which do offer alternative movement methods still expect you to crouch, kneel, lean, pivot, etc. I'm not 20 anymore.
Combine the above with the lack of audience (largely due to cost), it's a positive feedback loop of mediocrity. The Quest2 was the closest we came to affordability, and it was still the cost of a middle-range cell phone with limited utility and way fewer games.
When I was new to VRChat, I mainly played with teleport locomotion. (Well, "holoport locomotion": you point somewhere and hold a joystick, your point-of-view stays still while you and everyone else sees your avatar walk there, and then when you let go your point-of-view teleports into your avatar's new location. No unnatural nausea-inducing sliding.) Though there are some game worlds in VRChat that involve running around a lot that don't work well with holoport, and I would occasionally try sliding controller locomotion mode instead. Eventually, around the time I put in a hundred hours into the game, I found I could use sliding controller locomotion without issue, and switched to it for good.
This was only for the first week of owning and using VR, after that I acclimated to it just fine.
If the bar is "can spend as much time in VR as I currently do on PC gaming/console gaming" we're nowhere close to it. I can (and have) sat in front of a Playstation for 5-8 hours in a row, and even though my body feels like crap afterwards it's still a heck of a lot longer than I can stand being in a Quest 2.
There's a reason the most successful applications are short-and-sweet. But if you want people to socialize in VR and spend a large amount of time there both the acute illness issue and long-session comfort need to be solved.
For example Quest 2 while usable while wearing glasses, is deeply unpleasant. If you're a glasses wearer a set of prescription inserts is practically required. Likewise for comfort aftermarket straps are a must.
I get why FB isn't including these things out of the box (or has first-party consideration for it) but it overall makes the whole thing feel like a deeply unfinished product.
For glasses are you using the spacer? I find it okay with the spacer but it lets too much light in. And the aftermarket interfaces don't always support glasses. It's a bit of a mess.