That's because it's mostly tryhards who buy the DLC maps. You shouldn't be surprised.
Original maps... Noobs, scrubs and 2nd account tryhards.
DLC2... Tryards and tryhard wannabe's.
Nowhere is safe. All I want to do is sit in front of the fire in the bottom house on Lakeside. A nice cold beer in my hand and a roll up of my favourite smoking lettuce in the other hand. But no, people keep shooting me, or bombing me or even hitting me with a modded 2x4. It's just not right I tell you.