Because the power of the standard suddenly increased many of them became very surprised but at the same time everyone realized the danger. Most likely they wanted to get away from the place but unfortunately the pulling force of the tornado already increased.
Because of that one by one everyone is getting pulled into the tornado. Even if those people try to attack the Tornadoes and try to destroy them but unfortunately that wasn't possible. It was like their attack had no effect on the tornedos.
Actually right now if they wanted to destroy all the tornadoes then they needed to attack the center of the tornado but unfortunately they weren't doing that they were just attacking the tornado directly and because of that everyone of those attacks was also got absorbed by the tornadoes. Some of those people also used ground type attacks but unfortunately they also weren't targeting the center area of the tornados.
