This is a good thing and is a mark of progress, it seems you're arguing we should lower wages and living/working standards so that people are willing to do these jobs. This is close to a backward and selfish line of thinking that 'people should be willing to do things for me for less money'.

Why should essential jobs like caring for people be paid so little compated to jobs that provide little value to society like banking and PR? It's essentially the 'Bullshit jobs' argument made by David Graeber

Postal voting allows the same type of fraud, so an electronic system would only be as vulnerable as our current system in this respect.

Postal votes in our current system mean people can know your vote and force you to vote in a certain way.

Our current system allows others to know how you voted, postal votes are coercible and not secret. Your coercer could post your vote so electronic voting is only as vulenerable in this respect as our current system.

There may well be people who control that much of GDP nowadays but it's all been squirreled away offshore. Company ownership is often hidden behind offshore shell companies so who knows what the trillions parked in the Caribbean control.