About casimero I don't think if he get the 100% sure support by the crowd after these issues. And yes he still have a chance to fight and being a champion again.
He already got the support when he was still a champion, people accepted his style in boxing, he is trash-talker, so what? as long as he wins and make his countrymen proud, that's important, now it's time for him to correct his mistake and that is by bouncing back with a win, probably in a new division.
People need to understand that its part of branding, you are in boxing industry so you need to create noise for people to talk about you. He maybe sounds bad due to his loud mouth but actually we also need to give him a credit that he's really a good fighter. His actions is tolerable since we know he need hype and hopefully he can really bounce back after many idiot people trying to destroy his career.