Qatar played in 2 Gold Cups, the 2nd of which was AFTER the world cup in 2023 and just so happened to be within the timeframe of the government-owned Qatar Airway sponsorship contract. What competition were they "preparing" for???
https://www.concacaf.com/news/concacaf-and-qatar-airways-agree-to-multi-year-confederation-wide-partnership/
At the 2021 Gold Cup, they paid Fox to get their QF with El Salvador moved from FS1 to the main Fox network in Saturday night primetime with an ad inventory of Qatar propaganda. They even paid fans to dress up as Qatar fans.
Qatar Airways, with barely any flights to South America signs up as CONMEBOL's biggest sponsor and Qatar just appears in the Copa 8 months later. They were even announced as a guest team for 2020 (moved to 2021) but they had to pull out due to rescheduling.
https://en.as.com/en/2018/11/02/soccer/1541148083_700769.html
After all the things Qatar has bought and paid for. All you have to ask yourself is this. If you take away the government owned airline sponsorship deals, does CONMEBOL or CONCACAF have any interest in "inviting" Qatar? We all know the answer.