As a non-Schumie fan, I found it pretty fascinating. Some good insight into the man, with some touching old family photos/videos and interviews. Moving stuff.
A deeper dive into his rivalries would've been nice, and I was surprised that his ruthlessness at Ferrari and their team tactics were left out. I can understand why, but it's hard not to notice that Villeneuve is barely a footnote, and Barrichello is completely absent.
Small nitpicks aside, it's definitely worth a watch, though I felt that 2010's Senna did a better job at showing how complicated these guys can be.