I don't think that's entirely it, they don't want the product facebook is selling. VR Chat is massively more popular than Facebooks offerings.
Though Facebook had impossible goals, they didn't want to make a gaming device, they wanted to make the next smartphone, that everyday people and office workers would use. Which was just unrealistic.
VRChat is just plain better. It doesn't look like a Nintendo 64 game and it doesn't have the rubber tile children-first moderation constantly looking over your shoulder. It's more gritty like adults want.