RFC not KFC said:
Anyone who thinks 1 in every 4 countries, or, 85% of humanity being represented at the World Cup Finals is arguing in favour of 48 teams clearly sees no value or prestige in the FIFA World Cup Trophy. It's the equivalent of removing qualification standards for the Olympics and just letting anybody with a broom handle compete in the pole vault.
Every country (who can) competes at the Olympics, no matter how terrible their competitors in a particular sport are. Their competitors get knocked out in the first heat typically. And the winner of the World Cup will still be one of about 6 nations - Italy, Germany, Spain, Argentina, Brazil, England. (Ok maybe not England.) So the prestige of winning the World Cup overall will not change much.
Having said that, it makes the qualification rounds easier/less meaningful and the first round of the WC finals a farce. So I'm agin' it.
Also, this expansion of the Cup is not really because of corruption - it's not underhanded deals and brown paper bags (AFAIK). It is definitely political (increases Infantino's popularity in the Asian and African Confeds) and is also about greed (increases revenues for the finals). So still bad/stupid/short-sighted but not corrupt.