The metric of per kg of product, while entirely fair, can be a bit misleading when it comes to making high impact decisions in your life. The switching to tea example is a good one to criticize because on this chart coffee is quite high up there, but I consume only 15g of coffee a day, compared to probably close to a kg of meat, egg, and dairy. Eliminating coffee would not be a high climate impact decision.

Looking at your gear from 2 hobbies ago like, “man, I really need to get out and do [thing] again… Maybe I need to buy some new gear.”

What about a masters in engineering and a bachelor’s in chemistry makes him even double more qualified? Yeah, maybe if he had a doctorate you could make that argument, but you could easily learn and do as much science work in 6 years outside of a university than you would in a BS and MS program at a university.