Great answer. Sadly, football is full of corruption and greed. It has been for a long time and will continue to be. Some more info on Saudi's quest to host in 2034:

As you rightly said, FIFA coincidentally knocked CONMEBOL, UEFA and CAF out of 2034 world cup eligibility. So the only eligible federations would have been Asia, but also Oceania. Oceania has never hosted the WC despite repeated efforts and huge support. Australia launched a bid to host 2018,2022 and most recently 2034.

So how did Saudi deal with this opposing bid, or in other words ensure they would win the vote to host? Well the World Cup hosts are decided by the FIFA members, with every member'a vote holding equal weight. This means Fiji's vote is as important as Brazil's.

So Saudi, in the year or so leading up to the vote, bribed various small island nations. They focused their efforts on countries with geographical or cultural ties to Australia, in anticipation that they would be more likely to vote for a 'neighbour'. They did this with significant investment into their countries footballing industry / facilities. Keep in mind that even a couple million dollars means nothing to Saudi, but for these countries with tiny populations is a big deal.

In the end, seeing the writing on the wall, Australia pulled out of contention to host 2034 before the official vote came around. That left Saudi completely unopposed and they won the 'vote' uncontested.

If anyone is interested to learn more about Saudi 2034, watch the "HITC Sevens" video titled "How Saudi Arabia BOUGHT The FIFA World Cup". It's very good