ZZREAPER The roleplay kink is widely accepted and vastly popular in especially 2D. It's actually the 'step-whatever' that isn't accepted among fans but it's a consequence of payment processors crack-down on roleplayed 'blood-related' incest porn and the mainstream porn industry's attempt to profit from a popular kink.
The crack-down from payment processors is most likely also why we don't see the kink in VR as much as studios obviously can't afford the risk of loosing payment processors. A solution is again the 'step-whatever' or the fantasy in title only - like virtualtaboo's approach of regular porn labelled as the kink but where you in reality have to roleplay it all in your head.
SLR do have some great mommy videos though.