It depends on the context, I have been in meetings where everyone except for one PHB was left handed. The ratio was probably 50:50 across the company as a whole.
What is a PHB? I searched online, and found that it could mean bachelor's in philosophy (PhB) or polyhydroxybutyrate (https://en.wikipedia.org/wiki/Polyhydroxybutyrate), but neither makes much sense in this context.
I have an old hn account. Dilbert was something I was dimly aware of my dad reading in newspapers when I was a kid in the 90s. Never heard the term PHB before today.