Do rider cancellations affect drivers

I had a rider text me while I was enroute to pick her up. She changed the pickup point to a restricted area on a military base. She said she wanted to cancel, but didn’t. I called support and they took care of things.

Later I received this email:

“This is a follow-up email our agent had us send regarding your concerns about the cancellation of your ride with ***** on 1/7/2019. Our agent has cancelled this ride due to the circumstances, excluding the cancellation from your acceptance rating and issued a 5.00 cancellation fee. These funds should reflect in your Lyft account in a few moments.”

This brings up the question: do cancellations affect our ratings? If so, how so and why?