I wish we could know the real number.
I define a bitcoiner as someone who 'gets it' and understands the problem the asset is solving and its value prop. I don't count crypto traders, dabblers, and degenerates.
I would guess less than 1 percent. BT felt like it was fairly insular and more for Western technophiles, Austrians, and anarchists than people who used Bitcoin purely out of necessity rather than a combination of necessity and ideology.