How hard is to simply say that Brasil has been much better than most America countries since 2016? Argentina has no coach, Uruguay is getting old. Colombia, Chile, etc shake when reaching the important matches.
I don't think Brazil have been
much better than other countries to be honest. Brazil have certainly improved a lot since 2014's World Cup, but I wouldn't say they are on a much better situation than other Southamerican teams.
In this Cup, Brazil have mostly faced teams that are usually considered "weaker" compared to other teams in Southamerica and still didn't quite look like the Brazil we all grew up watching (Argentina being the exception). Draws against Venezuela and Paraguay and wins over Perú and Argentina.
Last night's match game was interesting because during the first 20 minutes of the match, we saw a great Brazil team, but then it could have gone either way to be honest, because Argentina started to perform much better than Brazil until the second goal happened. The ref was awful for both sides and it showed.
I do agree that football in Southamerica is going through a process of renewal though and Brazil are the ones who started this process. So, from that point of view, I also think that Brazil are doing much better than other teams.