Disregard the fact that Manchester united is having issues, which is not Peculiar to them alone, Chelsea are also going through the same thing.
Think about last year's world cup when Argentina lost to Saudi Arabia, many assumed Argentina to be shitty, but at the end of the tournament, the same Argentina took the world cup home.
That a team lost a match to a smaller team does not make them shitty, respect them still for me and you may concede more goals if we are sent to play there