The car was stationary until just before he stepped out and the driver already knew to expect that he would do so. It does seem that Mikey had time to avoid the crash though.
People shouldn't break the law while driving. What Cycling Mikey is doing is ill-advised and dangerous.
Noting that I didn't say or think that he's in the right for the collision and the video I linked (which was the first that I found showing the situation before the viral moment) concludes that both were in the wrong, as noted in its description.
At most, this was rolling it into traffic, but my view is he had a hand on the handlebar until right around the collision, so he was just walking with his bike.
But WTF is that traffic configuration? Why are people trying to drive through that lane in the wrong direction? Seems like a good way to get a head-on with a car in addition to pedestrians that weren't expecting a wrong way driver.
Vehicle operators usually have a duty not to proceed unless safe, even when they have right of way, I'm not sure how much that duty applies to pedestrians or if natural consequences is enough.