I think the word “master” has to be put into perspective. It’s the end result of a career of learning and experience. It’s not necessarily reflective of artisanship or even quality.
Also, there are an awful lot of sub-categories for carpentry. A master furniture maker may not know even the basics of framing a house, for example. And within furniture making there are specialties as well, like marquetry or finishing. There are plenty of people on this website that have mastered many of these specialties. You can’t expect anyone to be an expert on everything. It’s just not possible.
Losing fingers since 1969