Lets just say if some people did not have money, they would be as useful as a wet tissue.
If I didn't have money, I could offer my skills to barter for other goods or services. This is what money fixes, it creates a field where everyone can play on.
The problem is when all your skills and what you have to offer gets automated by machines that are 100000% more efficient and cheaper than you.
And because human society is driven by fiat money, only those who can create large amount of fiat money can mass produce these robots and make majority of people lose their job, this is also a result of being fiat money's slave
Bitcoin does not change the ultimate result of machine replacing people. But it might change the centralized society like we have today, so that more people can afford a robot or two to do the work for them