But also not really, he says it will still need a PS5. The PS5 will use a steam software as a receiver from your pc to play the game…Which by the way will make your games look like ---steaming pile of meadow muffin---. This video is over 2 months old and I still have not heard any updates.
Only reason this is happening if it ever does is because the playstation VR was and is a failure.
No. You will need an extra box, unless you already have an RTX 20 series or other GPU with a VirtualLink port. If Sony has enabled this functionality in the firmware, you can expect such a HDMI-to-VirtualLink device to follow from them to support the connection. Game streaming on most local networks is barely playable. Doing this with VR would be a non-starter.
According to Wikipedia, there are 278 released and/or upcoming titles for the PSVR2. For a "failed" device, I'd say having that much compatible content in the first year of it's existence is pretty good.