My observations are that way. I think Bitcoin needs to reach larger quantities. Can use bitcoin in people who are not interested in technology?
Can people use the bitcoin in the profession group like tradesmen, teachers, housewives, firemen, butchers? Are we going to see the days that these people use bitcoin?
Bitcoin could be used by the types of people that you mentioned above. If the person could do simple Math + add numbers with decimals then they could use Bitcoin pretty easily.
With a Software or maybe a App that calculates the price of Bitcoin in real-time, the price of their calculated amount could be known within seconds of opening the Software or App. They could also use BitcoinWisdom to calculate the price if they have browser access.
I am pretty sure that it's just a Math thing.