Once again, there is nothing wrong with co-hosting. My problem is not with co-hosting as such, but with providing automatic entry to the teams that co-host the tournament. IMO, automatic entry should be given only to two teams - defending champions and one team from the hosts. If there are multiple hosts, then the weaker teams should be asked to participate in the qualifier tournament. I understand the budget concerns. In some cases, a country may not have enough quality stadiums and all. But that is an entirely different topic from giving automatic entry.
But again, it sounds that co-hosting is still a problem for you. Because I have never seen a country, that got an automatic entry, performed bad. Often these countries are on top places on previous tournaments or have qualified to previous year tournament. It was never in history, that a non sport nation host any cup. As we are in football topic, then your idea is that it will be unfair to give an automatic entry for, lets say Madagascar, because they arent good at football and will never qualify? But Madagascar will never host a World Cup. Imho, in one day 10 countries gonna co-host a cup, I will have nothing against it, because I am 1000% sure these countries (that get auto entry) gonna perform well in the tournament.