I can understand why anyone who was insulted directly by certain people after the game would be offended, but as far as the whole ES-FU or a-hole chants, those wouldn't bother me. Hell, if I were the source of the a-hole chants, I'd think it was hilarious.
Like you said, I'm sure it's the same with any fan base. Get enough alcohol in your system and you turn into an ass no matter what team colors you wear.
Yes I must admit it is stupid and childish, but when I bring my kids to the game I tell them they are saying (eat fish fondue)
Watch here if you want to see and hear what it's like. Don't watch if you'll be offended.
On the personal insults after the game, yes some that I’ve heard seem over the top. I would offend me too, but I wouldn’t let it ruin my experience either.