These people and the people that take their advice are going to age horribly because they've wasted a ton if time unfortunately.
A really good self-help book will take about 8 hours to get through in audio format. The great ones will let you know you must take direct action.
Folks are going to listen/watch 8,000 hours of podcasts (practically the equivalent of 1,000 self help books), not go anywhere and still not know what to do. It many ways the "advice" they get will simply make their lives worse. Not to mention they'll continue the need to listen to more podcasters because they're still looking for answers when the answer is real simple - you got to take direct action.
The podcasters who actually want to help people out are the ones that actively go out there and tell you to stop listening to them and start taking action if you ain't doing shyt yet.
When you have a bad foundation/framework, that don't set you up for anything as you age. The only one benefitting from any of this is the podcaster.