Not really. These people will work in services instead (and develop valuable skills as a result). They could do things (even like Pet Grooming) that benefits other people and free more of their time.
I agree, but the issue is people are paid according to their impact on the economy. Sob while they may spend time doing things that benefit society, it doesn’t mean they will have the money to consume.
If a hedge fund manager quits to be a social worker, they are doing something to benefit society but they aren’t going to be able to support the lifestyle of an economically productive hedge fund manager
If a hedge fund manager quits to be a social worker, they are doing something to benefit society but they aren’t going to be able to support the lifestyle of an economically productive hedge fund manager