Sure, creating new stuff doesn't necessarily imply throwing everything out each time you make an addition or change.
It would be like a startup guy re-inventing alarm clocks and breakfast every morning, followed by re-inventing showering, shaving, dressing, opening the door, entering the car, starting the car, what lane you drive in, etc.
You'd never get to your workplace to do whatever it is that your startup is creating ("We Are Re-inventing Innovation!" -- you might think I'm joking but that's a common tagline even PARC used it).
Some stuff you take as it is (a baseline) and you create around it.
Maybe tau is something to consider more seriously but pi has done pretty well for itself and many don't consider changing it to be a big priority.
Kudos to author though, I think most of mathematicians out there just take math as it is. Lack of entrepreneurial spirit I'd say.