I own the original HTC Vive and it does have the screen door effect. I hear the newer higher resolution headsets don't suffer so badly from that. Have you seen the newer Valve or the new Vive 2 Pro?For gaming there are actually good reasons for wanting additional bandwidth past the highest currently available.
There are high end VR headsets that are running with more than 4K resolution per eye at up to 90 fps. A few manufacturers have already resorted to using compression/decompression to get what they need across HDMI and DisplayPorts. One manufacturer had to use two DP 1.4 connections to get the bandwidth they needed.
The DP 2.0 spec is s 77.37Gbps data rate, not raw) and was published in 2019. It isn't currently supported by the latest 30 series NVidia GPU's. There are Displayport 2.0 8K gaming monitors being released this year. They will be capable of higher frame rates for gaming but we will be waiting for the 40 series NVidia GPU's likely to be released in the Fall of 2022 to reach their full potential.
I'm not worried about the 8K TV's as I consider that resolution completely wasted, however I am looking forward to new headsets with well over 8K total resolution at higher frame rates for VR headsets. With the lenses that close to your eyes, there is a lot more room for resolving detail. The recent Varjo has a center section of both lenses that is supposed to be a retina display surrounded by a more typical 4K screen. It's pushing an enormous amount of information.
I'd love to build a new gaming pc but finding a non scalped 3080 ti or 3090 card is impossible. The 3090 is still selling for over $3500 each on Amazon! I'm still using a gtx1080 on my non vr rig. My vr pc has a gtx 1080ti. I was planning on building one this spring. I noticed prices are high on other components too. Bad time to buy anything right now.
Sorry if I got off topic.