Agreed. There are errors and misinformation. That's the case with virtually any movie that's based on anything close to real history.
But, consider this: If, ten years ago, we were each asked if we would put up with a handful of inaccuracies in exchange for having a major studio make a big-budget film with big-name stars, about Shelby, Miles and LeMans, I'll bet that 99.9999994% of us would've said "Hell yes, bring it on."
While watching the movie, I did turn to my pal and say "well, that never happened" a few times, but we still enjoyed it immensely.
I only wish that CS was around to have been a consultant, and for me to hear his comments (privately) about the finished product. He might growl and huff a bit at the Hollywood process, but he would love the increased Shelby-name-recognition now on the tongue-tips of a whole new generation of people. I like that too.