I was a hiring manager in aerospace for decades. We for sure checked transcripts before a start date.
I also just don't get people who lie on their resumes. That would cause me so much anxiety. Even for things I have training or experience with, I always worry people are going to expect me to be more proficient than I am. I had I guy put that he was fluent in a computer language that I'm not sure he'd ever seen, so everyone was always frustrated with him and he eventually got laid off.