The headlight on that motorcycle was plenty bright for the car's driver to have seen it; they were just impatient to get into the already full center (it appears they tried going to the left of the blue pickup that was also turning left). I used to drive a "divided highway" (Scottsdale Rd heading toward Cave-Creek/Carefree, for those who know the area) like that daily and at least once a week someone would do something similar.
Most of the time changing lanes and/or slowing down (hard) while on the horn would give the other car enough time to fully get in the crossover. Once, thankfully I was driving my M3 which had the ability to stop in time, as the person who I almost T-boned is looking out their window
at me and not paying attention that the car in front of them was no longer blocking and they could have pulled forward and saved both of us from having to change our underwear.
I used to do my daily commute on a motorcycle. It was great until I got a job that took me through downtown (through the I-10 "tunnel"). About 2 or 3 months after I got that job, there was one week, where EVERY commute (both to and from work) some "cager" tried to defy the laws of physics and occupy the same time and space as me. After that week, I stopped riding to work and sold the bike about a year later as I rarely had time to "just ride".
I've also seen my share of bad motorcycle riders. Two that I remember, because they both crashed right in front of me.
First one I saw coming up behind me as I was getting off the freeway, he was weaving across all 4 lanes passing cars like they were just sitting there (and traffic was moving along at 65-75 mph). He passed me on the off-ramp where there was room, but it was technically a single lane; we both made the right turn at the bottom of the onramp and ended up more or less next to each other behind traffic at a light. When the light turned green, the car in front of him was slow so he ended up changing lanes to get behind me. Then as soon as there was room to get back in front of the slow car, he changed lanes again and hammered it. But the work truck that was in front of me changed lanes at the same time (maybe even a little before). The guy on the bike tried passing the work truck (who was changing lanes much slower) before he could complete the lane change but ended up tagging the driver's rear corner of the truck and then hit the median curb and went down hard. I made a U-Turn and came back to give testimony to the officer taking the police report, as did about 5 other people who all testified to the rider being aggressive.
The other one was also on the freeway, during "rush" hour where traffic was moving along at a pretty good clip but approaching a hill where it always slowed down (101 in Phoenix West bound just before Cave Creek Rd). As traffic started to slow down, I was admiring a nice classic hot rod in the lane to my left, a 1970ish Chevelle that was super clean. Saw the bike coming up in my rearview mirror, changing lanes, flying by cars that were slowing down. He came up behind me, flew into the lane to my right, passed me, then cut across in front of me (not into my lane but through my lane) into the lane to my left and smack dab into the center of the Chevelle. The way he looked when he hit the back of the car reminded me of a bird hitting a window - splat!" To this day it bewilders me how he picked the ONE really cool car on the road at that moment to crash into.