FUD - pure FUD - hyperbole about the resources needed to use open street map data - most first world developers can afford a single system to work with address or map data for their whole country if not the world.
I went to an Earth day event in the late 90s, which had lectures on the environmental impact of beef and really good vegan pizza, vegetarian ever since -- Vegan for 7 years of that; but got tired of being that guy. I was already vegetarian at home at the time, so I just stopped ordering meat when I was out to eat.
As a recently minted family doc with a tech background, a tech background only helps a little bit with your medical training; if you are just starting undergrad you can try your hand at genetics, computer science, bioengineering, biostats, etc.; however these can have negative impact on your gpa and science gpa, so be careful.
Getting into med school, completing medical school and completing residency are all difficult tasks in and of themselves.
If you know you want to focus on certain areas of tech there are also a few add on fellowships after residency.
Getting an internship or job in biotech, or even working as a medical scribe may help you more in the long run.
If you have extra cycles and really want to learn to code you could add a CS minor to your degree or take a bunch of the online Computer Science courses (typically CS assumes that you've had 2 years of advanced math ( calculus, differential equations, etc.)
Under no circumstance would I recommend delaying undergraduate graduation to add on these extra skills, Rather get a masters in an in-between year, or if you're really crazy there are some combo MD/Phd and DO/Phd programs.
But outdoor activities are probably a better use of you time, take up running, cycling, swimming. Something that you can do anywhere to take care of yourself and that reduces your stress level.