People are making way too big of a deal about the addition of 16 teams. (aside from the obvious FIFA money grab, which is fair)
There are a LOT of really good teams out there, and the number of participating countries since the world cup was introduces has dramatically increased.
Also, the extra 16 teams that would make it are also pretty good teams, it's not like San Marino is getting in. (except concacaf for some reason getting 3 more teams, but pretty sure that's only for '26 bc of the triple host and we'll see that drop in '30)
Great video on this topic with reasons why it might work out well, even though it's a blatant FIFA money grab: