lol do you even read what you are typing?
People who are using water main are doing it because they have the right to do it.
How is it abusing when everybody could use it (given you have the right ninjas to use these formations)?
There are enough options to beat these teams. The thing is that every team has a counter team so no matter what you are doing... Unless you don't have 500.000 battle points there is always someone who will be able to beat your team. Deal with it.

When you can just auto everything and still win, then that really isn't skill. Just because you're limited at countering healing teams, or your mind is limited to figuring out lineups that can break healing teams, doesn't really me*l other healing-/poison-heavy teams are just abusing the game. My lineup loses almost to any Fire main that uses immune shield and can ignite multiple times, but I never said anything about them abusing the game just cause I couldn't do anything to them. My lineup is certainly not for auto, and you'd have to be not * enough to use any ability needlessly. I carefully time my attacks, read enemies' patterns of responses. Taking all those things in consideration, I've earned several six paths that I so well-deserved. Last year, I was seriously reduced to nothing by Han/Sailor/Roshi and Mabui/Tenten teams, but now I've found a way to deal with them and my style of playing gets called an "abuse", aren't you assuming things too much? Sometimes it's better to use the little brain we were given than plainly calling people out for how they've won. Teams like Mabui/Tenten/Mei and Han/Roshi/Sailor teams may not even require too much skill coz they rely too much on abilities that go off themselves on auto while still doing considerable damage that the enemies can hardly deal with. I just refuse the idea of just anyone calling all healing/poison style lineups "abusive", cause not all of us rely on one-sided/auto battles. I win my battles fair and square, I wear my battle scars with pride. Now if I fight someone without some sort of immunity or healing on their part, it's not my fault anymore. Maybe that's the time they figure out how to deal with these new metas arising.

P.S. Next time you call things "abusive", don't generalize. Some of us battle for hours and competing with Susano'o ITachi, Shark Kisame, Madara and a lot of other premium ninja. We struggle for real, but it sure feels friggin nice to rise above them. Now having someone discrediting our hard-earned success and just assumes things, that's quite unacceptable.