Triple Major

Don’t worry about what you’ve read on line. You can also find stories on line of people who have triple majored and for whom it’s been seen as a positive. Completing a triple major is hard. I can’t see how accomplishing something that’s hard to do would be considered to be a negative. As for lack of direction, your proposed majors are all related, so I would dismiss that criticism as well.

I would say, Go for it! You can always change your mind if circumstances dictate otherwise. Just talk to College representatives in advance to be sure that you can do it at the college of your choice. Make sure that you can and do get an academic advisor to work with early in your college career - freshman year.

I don’t know what kind of college you’re looking at, but for starters look into the Beyond Boundaries program at Washington University in St Louis. AFAIK, it’s unique.