I don't want to see anyone crash. But if you play stupid games, you will win stupid prizes. Right or wrong that cager had its signal on with intentions clearly made. Remember YOU are invisible at any speed and should ride with that understanding. Everything is your fault on a motorcycle - even when it is not your fault. We pay for our mistakes and everyone else's with our blood and sometimes our lives for simply being out there. I'm glad you were not seriously injured.
I'm going to be candid and honest instead of blowing smoke as well. Having lived in Thailand, I am used to lane splitting but lane splitting is always done at slow speeds or at near standstills. The point of lane splitting is to prevent getting rear ended. As a rider, it seems like we tend to like to blame the cars but really, the fault is USUALLY on the rider except for the dreaded left turn.
As noted by the video, you were going much faster than the flow of traffic, it may just be a glare as you noted but from where I stand, I saw his turn signals on and you obviously were not paying any attention either. You may say "he didn't look for me" but you are the smaller of the two and he's in front, way bigger than you, and moving at what was likely no more than 10 mph when you guys collided and you didn't even swerve just a little bit which tells us it's obvious you didn't see him either
and that's at near stand still speed. You missed a car moving at 10mph and while you may say the lane change was unsafe, he never left his lane and you kept going straight without a hint of slowing down or even swerving to avoid the collision.
Some accidents aren't preventable but an accident like this one was clearly avoidable and while you or the insurance company may want to put more of the onus on the driver, but as riders, we need to take responsibility when we are at fault as well. It's not 80/20 or even 50/50 here in my opinion. Wait, yea I can see it as 80/20 with the 80 being you, the motorcyclist.
Anyhow, I hope you ride more careful/defensive and this is the only accident you ever get in. Never good seeing a rider go down but some riders go down numerous times because they don't see that they are the ones at fault, or more at fault for the accident, and thus continue riding the same way. For example saying the issue isn't that you were going too fast for the environment, or blaming it on the driver for not seeing you and totally ignoring the fact that you clearly didn't see him either when he was in a vehicle 10 times bigger than you, and then blaming that his unsafe lane change was the biggest factor in the crash. Those of us who have made it without an accident (although it's almost inevitable that it will happen) is because we ride defensively, especially when there are cars around. If you are not looking out for you, it's very unlikely anyone else is either.
Scariest part about lane splitting like that or at higher speeds is if you get clipped in traffic, you can very well get run over and when you wake, you don't get to say hi to doctor but to someone called your maker. GL man and be safe.
PS, the traffic is near a standstill and right before the OP crashes, you can see him glance down just a bit and his speedometer is 43mph. For lane splitting, you are to be going within 10mph of the flow of traffic. Not exactly safe speeds.