YASSSSSI feel Chargers are really hit or miss... no pun intended. Compared to the other weapons they are in a league of their own in terms of the skill required. Anyone can pick up a rapid fire weapon and do well with them due to how forgiving it is to miss with something that hits 5+ times a second. The same can be said for Rollers, all you have to do is roll or fling ink at people, though they are a little harder to use and some stages can be difficult to move around on. In the right hands a charger is amazing and your team will enjoy the relief of constantly having to watch their backs. I recently started using the Squiffer and I instantly loved the gun. Most of the chargers just feel too slow for the current game modes or maybe it's just me playing them wrong but Squiffer felt perfect for my play style.
Are chargers bad? No, but most of the people using them are ;)
Also... motion controls are not mandatory to be good with chargers. Not everyone plays the same way so if sticks work best for you then use them. I personally don't use motion control because it just feels really awkward. However, I have played a lot of shooters and I am pretty good at twitch shooting so that kinda makes up for it I guess lol. Here is some of my gameplay with the squiffer for anyone interested:
thank you!! so far i've encountered no other good squiffers online, so i'm always looking for strategies myself :x