DDT: If you consider that somebody who plays a synthesizer is a musician then fine.    Sorry, I don't.   Synthesizers are the opposite of real music.    And it's you who are showing ignorance--I'm surprised you are not up on recent developments-- if you don't think that musicians lose work when arrangers choose to use a synthesizer instead--which is progressively easier as the synthesizers develop more and more fidelity and range-in any number of instruments.

There are more and more occasions in which management can choose to not have a full stage orchestra or band, due to advances in technology.   And they do. I'm amazed you don't realize this.

You need to do a bit more reading--and perhaps see more stage shows.