Ok thanks Vstar, my ocd was kicking in because I was watching YouTube. Apparently 2010 didn’t have one like in the pine hollow video.
But in the auto fix pal video with the 2012 had one as shown. Moreover, 1A auto also had one which was again a 2012.
Just wanted to be safe. I just tried to say to myself that the cotter pin was enough. My only worry was it could loosen with my luck.
I’m in the process of replacing a split inner boot and replacing the outer boot while also in there as preventive maintenance.
Didn’t mean any offense with my speculation.