They are dangerous, correct, but this is definitely not the Atletico Madrid from five years ago. They have always been infamous for their amazing defense, but that's quite some time ago. It doesn't mean there would be any good reason to not take them as seriously as in the past, but still I would be shocked if they were to beat Inter Milan. On that level it is of course possible that they have a good run in their game at home and score first, but if that doesn't happen, I think Inter Milan is one level too high and too clever and strategically too strong to still give this away.
I know it could turn into one of these ugly games that Diego Simeone loves so much, but Inter Milan can be quite ugly as well if needed. They know how to play this game. But yes I can only recommend everyone to get ear plugs for this one as well as Simeone will scream the hell out of his body!

He is probably the only one who can compete with Jurgen Klopp when he is freaking out. I would love to see both of these coaches one day make their most aggressive faces and stand head to head, I think everyone knows what that means.

I agree. We don't have the same old Atletico Madrid anymore. That Atletico Madrid which obtained bigger achievements could have played much more effectively against Inter in the first leg too. But we just watched a desperate team trying to secure a draw at worst. We are likely to not see Griezmann in the rematch which is another bad news for Simeone.
Inter are an amazing team this season. They are scoring so many goals and conceding really few number of goals on one hand. While they are in a much better condition it isn't easy for Simone to keep up with Inzaghi's team easily. Inter should be able to move on in the Champions League.