Trust me, I can’t stand Gang of 8 Rubio, and your link lists a whole bunch of reasons why. But Rubio skipping that vote had no actual bearing on anything, and I’d chalk it up more to his crappy attendance habits than anything else. Attacking him as being not pro-life enough is just stupid. His whole career, fighting abortion has been an issue where he’s solidly conservative. He has not waffled on his “no exceptions” stance, as many many others have.
I’m just saying, I think this is a boneheaded and misleading tactic and will not play well with a lot of people who follow the candidates on this issue.