Is there a way to judge the quality of software design through commit?

For example, I have 2 class files (ClassA and ClassB) and each have 100 commits in the past week. However, all the commits of the ClassA are from the same developer, and ClassB is submitted from 100 different developers.

Intuitively, the design of the ClassB is bad, because too many developers modify this class, indicating that the design isolation is not good enough.

My question is whether there are theories or standards or indicators to measure this situation？

Many Thanks!