I appreciate what you accomplish with hand tools; but to say hand tools, relative to machine tools, in some way, allow a maker more freedom to express him or herself, doesn't ring true.
Freedom of expression comes from within; how it is accomplished, is up to the individual maker.
One maker could have a building full of fine machinery and only be able to turn out mediocre work; while another maker with only a file, turns out a masterpiece.
These situations can have an opposite outcome, by changing the person using the tools.
I have no doubt that if you had chosen to use power over hand tools, you would have been just as accomplished a maker.
There are 40 files in my drawer and dreams of a new machine in my head.
Fred