I think you’re over thinking this. The majority of students don’t have access to things like programming, drafting, and robotics. Your student’s achievements in math, physics and chemistry are fine.
My son’s tinkering experience was legos. It has NO impact on a college application, but showed us at a young age that he had a curious, problem solving mind. He was also on the math team. That was his only STEM EC. Now he does high level mathy stuff, but can also mill, 3D print, solder, design and build circuit boards…I could go on. The point is, he learned those things in college.