is not a threat my bro.
People say a lot "im fked" or "we are fked" and no one was actually fucked. At least im not.
You have to understand before saying is bad, just like the "apavoro" problem in CS.
This chant is used in literally any kind of competition of anything that is played in a stadium in Brazil, from football, all the way to e-sports.
Now they're probably just using it to spite ardiis due to the Lock//IN drama tho.