Decent article on it here. You're absolutely right that 99.999% of people won't care and will still watch though, @bobzy
Infantino had been working on enabling this tournament for years, presumably for no reason other than he thinks that Saudi Arabia is a wonderful country, and it's a great opportunity to spread the love of football in what will be a fun filled festival of football in a progressive nation that welcomes everyone.
It's a much longer article, I've trimmed it down to the relevant bit.
https://www.nytimes.com/2023/11/15/world/middleeast/saudi-arabia-fifa-world-cup.html
They got what they paid for, and now the money is flowing to reward their FIFA lapdogs.
The last FIFA corruption scandal saw law enforcement cut off the head, but the corruption ran much deeper than that.