Porto was another European club eliminated. I guess the players thought enough is enough, let's go on vacation. Otherwise they wouldn't have conceded 4 goals against a team like Al-Ahly. Even if they had won, nothing would have changed because Inter Miami was leading 2-0 then conceded two goals in the last 10 minutes to draw the match and Inter Miami and Palmeiras advanced to the next round.
Atletico Madrid and Porto were the teams eliminated early. But this shouldn't come as a surprise. Not every player gives this tournament the same importance. You have to give credit to the players after a long league marathon. They need a vacation, they need to rest. Otherwise they are more likely to get injured.
Atletico Madrid were indeed very unlucky for not making it to the next round,there elimination came as a surprise to me because after winning Botafogo by 1-0,they were still eliminated and Botafogo qualified. Lucky Botafogo made it to the round of 16, it wasn't easy for them to be among the qualified clubs that made it to the next phase. Brazilian clubs are quite amazing in this CWC,to be honest I didn't expect to see Brazilian clubs playing this good, infact I am satisfied with their performance in the group stages,hope they will continue to keep it up now that they have made it to the round of 16.