0.00002% of 17m population?
0.0000002 * 17000000 = ? 

 

The number of merchants accepting Gulden directly is already more than 0.0003% of the population.
Gulden slack channel: Number members close to 0.0008% of NL population.
Direct Twitter followers of Gulden (most of them look dutch to me) equals to 0.005% of NL population (indirect followers not included).
Direct Twitter followers of Nocks (here too, most of them look dutch to me) equals to 0.02% of NL population (indirect followers not included).
That's only a few numbers put together quickly. 

Including family members and friends that got talked about it, it looks like a good amount of people to me.