That's something that is discussed before about the World Cup hosts getting automatic qualification without any condition with other teams.
The fact about this rule is some countries are not even in the situation to play in the world cup but they are playing there just because they are hosting it. But, imagine a country like America is hosting the next world cup but they don't play there, I think their people will lose interest to host this tournament, and maybe that's why they made this rule.
I don't agree with this argument. If just one country is hosting the tournament, then it is still OK. And in 2026, three countries are being given automatic qualification, and if they go through the regular qualification process then in all probability none of these teams would secure qualification. And things will get even more complicated in 2030, in case the combined bid from Argentina-Uruguay-Chile-Paraguay wins hosting rights. In this case 4 countries will be given automatic qualification and only two slots will be given for CONMEBOL qualifiers.