for context 22 billion is a few billions less than what elon musk overpaid for twitter. i don't think a bigger collider will do anything but I'd like for humanity to have this rather than whatever the fuck the rich are doing now.
if i remember correctly twitter was evaluated as 20 billion before musk bought it, so he overpaid by 24 billion dollars which is a couple billion dollars more than the price tag quoted here.
For your money you can have "A social media platform that's on fire or the secrets of the universe and money for another project. What do you choose?"
"The dumpster fire social media platform"
Cern has produced quite some interesting systems for software and data management. I am sure the added value of the work is beyond just understanding particles.