Yes. I don’t understand the strategy either. Many people did not go for Trump because they were put off by his vulgarity and lack of class. It seems to me that a better strategy for Rubio would be to try to differentiate himself by acting “Presidential,” stressing his approach to issues in a constructive, positive way, showing people why he wants to be President and why he is the best person for the job - instead of trying to out-Trump Trump by imitating the Trump tactic of insulting people.
Rubio isn’t very good at this imitation Trump stuff. He just comes across as even phonier than before.
Sadly, the childish antiques had to be done. Why not use the youngest one closest to physical childhood? It might be too little, too late, but Rubio might be sacrificing himself to weaken the Trump. I doubt that is the strategy because I think Trump is a nasty mouth part of the establishment and Rubio is the pretty boy part of the establishment. The establishment doesn't want Cruz. They are ok with either Rubio or Trump... if not happy, they are ok because neither are Ted Cruz. Rubio just might be desperate and angry enough at Trump that he is doing this attack on his own. I hope Cruz benefits from it.