Have these cuts for a gas line structurally compromised my studs?
You are allowed to notch a non-load-bearing stud up to 40% of the width. For load bearing and exterior walls they can be notched to 25% of the stud width.

https://engineering.purdue.edu/~jliu/courses/CE479/extras/Notching_&amp;_Boring_Guide_A11.pdf