I'm not mad. But you should look up the definition of "nationalism", it's not what you think it means. Also fair enough if you don't like TF2, but your opinion is based on a weak experience (ie watching a YouTube review).

It's a "cool thing" to hate on TF2 because it's not a "serious" FPS, but there is a reason that its popular. When you get into it, its fun, fast paced and action packed, full to the brim with humour. The quality of pubs is far better than CS:S as well. You won't find arrogant fuckheads like yourself in a TF2 pub saying shit like "oh you're so bad, i pwn you n00b!! Get g00d cos im pr0!!1!!". You can call it childish, but the quality of pubs is way more mature than CS:S. The reason no one is like that in pubs is because everyone is there to have fun and try and improve their skills. All the classes are evenly based as well, so people just train with 1 or 2 classes (myself I choose Scout and Medic) in the hopes of making a competitive team.

So yeah, go ahead and judge TF2 on as little as a YouTube video you watched. I mean, why bother experiencing anything and making up your own opinion? Just borrow someone elses from the internet.