I understand your frustration Melon, wanted to try and put your mind at rest as someone who has done a uni application for September, albeit as a 'mature' student on a postgrad course!
Universities themselves are in a huge bind, and are being pulled from pillar to post thanks to the wishy-washy advice from the government. Some of them have thousands of people spread across multiple campuses, coming in from all over the world to plan for, and not just the education aspect, but the accommodation side as well. They're having to plan for everything from a full return to normal in September to the possibility of an all-virtual academic year, and everything in between.
The point of that little ramble being, they themselves can't plan in the way they usually would like to either, so don't worry too much at this stage.
The best advice I could give to you both if he wants to start planning ahead would be to look at the UCAS undergraduate website extremely closely. That will contain everything he needs to know about both the normal process and the disruption. The UCAS form itself is relatively straightforward, and the pandemic may only really affect the predicted/actual grades part. The thing people tend to need most help with is the personal statement, but there will be information on that too so that he can begin to get ahead now and hit the ground running when he has one-to-one teacher time again.