So do you think stocks are a threat to employment? Because everyone can invest in stocks and wait for it to rise, there is no need for a job. It's ridiculous because everyone wants to profit, why do not you think about the risks that it brings, and you can fail and need a job?
Bitcoin will not be a threat to fiat money, because the segments are different. If bitcoin can operate if there is an internet and has sufficient knowledge in its use, fiat money can be used because it is very easy. Moreover, the presence of bitcoin does not interfere with work carried out conventionally.