This isn't some Cinderella-story. They were bought by a nation-state and flushed with oil money. Congrats to them but it isn't really that surprising or compelling to me.
The three giants of Liga MX over the past ~dozen years, as the league has lost parity and become more stratified, are Club America, Tigres and Monterrey. They have been levels above the rest of North America.
Nashville eliminates two of them en route to the final.
There's a big difference between identifying clear and obvious errors and searching for reasons to change on-field calls.
This is actually a good test case.
People who are not watching this game, or are seeing this Tweet later: Can you even guess why this goal was disallowed?