I don't think it's justified to say that, he can do Grok anyway he wants, he never promised -or make it his mission- to open it up. It's a different story for "Open"AI.
i know how: you need a verified phone number to open an account, and open ai does not accept chinese phone numbers or known IP phone numbers like google voice.
they also block a lot of data center IP addresses, so if you're trying to access chatgpt from a VPN running on blacklisted datacenter IP range (a lot of VPN services or common cloud providers that people use to set up their own private VPNs are blacklisted), then it tells you it can't access the site and "If you are using a VPN, try turning it off."
In 2003 I installed a scale in our dorm toilet. When you sat down you push a button and when done you push it again. If you were in the top five you could enter your (three letter max) name using a two button system. Top five were displayed using a super low resolution screen similar to a pinball high score screen.
Not to knock on Sunvox or NightRadio (both awesome!), but that effect only exists in the video. It doesn't happen when playing the demo song on the software, and they confirmed it was made with a video editor [1].