There are people learning to use the chargers, especially the Bamboozler 14 Mk I. It takes a while and a lot of practice. I'm currently trying to get better with them, and I most commonly get 1 splat per match (including the Bamboozler, oddly), though I'll frequently get 2 to 5.
No, what's annoying is people who don't know what you're supposed to do when you have a charger. For instance, I recently encountered a "loulou" who had a Kelp Splatterscope. It was Tower Control in Blackbelly Skatepark. Whenever we had the tower, loulou would go to the area in front of our spawn point, slightly to the left. Whenever they had the tower, loulou would run over to the goal near the opponent's spawn point. Every match, loulou had 0-X, as loulou was way too far to affect the match in any meaningful way and wasn't covering nearly enough ground to use its special (whatever it was).