"used to say" as in, "in the past".
Maybe you can count the number of shotgun deaths on my hand, I'm not saying I walk in to a game and litterally kill every player. I don't purposefully go out of my way to hunt players just so I can claim that. Maybe you just go to places that are not easy for a shotgun to get to. I usually walk straight down the middle of the map and don't climb structures.
Besides that 99% of players on GH are deuces...
To me it encourages the "sprint from cover to cover and always attack unexpectedly" mentality, rather than camping.
The advantages of the shotgun, as I said, is not needing to wait for reload mainly. Hit R after ever shot and you never need duck out of combat or worry.
Shotgun is not as versatile as the others, but it is decent.
I feel like it would be dishonest for me to say "This weapon that can destroy an entire team without effort, it needs buffing because I can't snipe with it!"