~snip~
I don't agree with you. If the player managed to hide his ineligibility, how it is going to be the association's fault? And what FIFA is doing is certainly abuse of power. In case of Denis Cheryshev, it was his fault that he didn't informed about his suspension to the new club. And instead of punishing the player, the association decided to punish the club. This is similar to national teams getting punished whenever someone does hooliganism in their home matches. Actions of one or two people can't be used to punish an entire team.
It's a pretty standard practice really. Teams get forfeited matches and gives a 3 - 0 win to the opponents. This is the garden variety of punishments for fielding an ineligible player. And that's what's on the table.
Now, if things end up being more serious, then there are way more serious consequences.
For example, Chile was banned for two world cups and a player banned for life for [El Maracanazo](
https://bolavip.com/en/soccer/the-chile-maracanazo-that-left-them-without-two-world-cups-20201013-0012.html). What a goalkeeper did had extremely harsh consequences for himself and the whole team.