There will be people that do not have favorite hobbies. There will be people with no ambition who benefit from being told what they can or should do to contribute. Those people, in order to have their needs met could choose to take on a Necessary Task, even if it isn't their favorite thing. Maybe they learn to love it and excel at it.
Don't want to do anything to contribute to society despite being physically and mentally able? No needs met. Meet them yourself, you magnificent lone wolf. Want your needs met but don't want to do Necessary Task that you hate? Find a purpose and pursue it.
Have the talent and desire to be a heart surgeon? Go for it, and you'll be rewarded. Want to make life sized statues of the Beatles out of used printer cartridges? Eh, fine but maybe also get a day job.
Sorry but Capitalism is a broken system that is not meeting mine or million's of others needs, much less enabling us to pursue what we're actually passionate about. I at least know that I am passionate about building and supporting technology but I still struggle to pursue it professionally because I had the poor luck to be born without the resources to get a piece of paper that says I know how.
It seems like everyone just thinks it's how you describe the contemporary world
No, what they're describing isn't capitalism. Not even close