You aren't the only one who thinks this: https://forum-narutoen.oasgames.com/page/show-post-23256-1.html

The most simple reason why people use these types of team is that they want to win. That's why most f2p that want to be competitive choose the tenten, mei team. If you want to rant, continue ranting on one post rather than multiple posts that serve the same goal.