Oh, yes, I have been aware of this since last century, and to be honest, it's just appalling.
When I found out, I changed my life. My wife and I have a plant-based diet (just like vegan except this phrase doesn't offend people), I have never owned a car, we have no kids, we don't fly, etc etc.
Decades later, almost no one else I know has changed anything. People I knew who were vegan at the time had kids and decided to buy cars, fly across the country many times a year, and feed their offspring as much meat as possible.
My article comes across as grumpy, on second read and I must apologize. We're facing some existential threats here and are probably moving to a new country soon, so we are filled with angst and hope, and a lot of things are very irritating to us...