I challenge you to demonstrate the supposed understanding you have that would explain why that website is following "industry‘s shitty solution to forcing users to consent with tracking." (and not even each industry website does such stupid full page banners) instead of using non-shitty solutions.
It's a good question, which has a very obvious answer: even government websites are built by clueless people and/or marketers and/or using shitty tech.
Which you can see when you click on "personalise" in the cookie banner.