The Quest 2 is still a solid option to enter VR porn as it can perfectly handle 8K videos which is the standard for every week new releases. The only thing you’d be missing out is on proper passthrough videos, but that’s still kind of a niche and a minority of the new videos being released every week.
Once you have one, I’d recommend setting up XBVR + Heresphere and you are golden. It may be a bit daunting at the beginning but it pays out big time once you get it up and running.