b_l has obviously become one of those people so filled with hatred that he will argue against Trump, no matter what Trump says, or b_l actually believes.
It's kind of like the whole Electoral College fiasco: When Trump was bashing it, people claimed it was great, yet when it was the reason Trump won, the very same people wanted it retroactively destroyed.
Flip-flop because of hatred: is that what we want and need more of, or do we want and need honesty and consistency, even if it's not what we want to hear?