Ain't nobody saying that, just open sacy's tweet and translate the comments. You americans be fighting all the time on the internet saying shit like "come with a sign that says 'fns my daddy' " and shit and no brazilian start making comments about it, we just laugh. Brazilians have a different way of cheering and supporting the players, sacy is like a nacional hero here, i'm pretty sure nobody is "disrespecting" him, people are just mocking, chill lil bro and good luck trying to make it to the playoffs.
btw, this is americans sending death threats to an american player: https://twitter.com/C0Mtweets/status/1647269216943497217?s=20