Itβs the same with YouTube coaches teaching people how to become entrepreneurs, but the only business they have ever build is their coaching business. It just does not add up
But if everyone's selling shovels because it's easier than digging for gold.. It's an oversaturated market - perhaps we should be encouraging people to "dig for gold", to search for something that produces original value, rather than be in the market of derived value.
You'd be better of hiring people with little to no experience than someone who was taught by these gurus.
Realistically the only way to get better at writing is just pure luck in getting into the right groups of people and even then those groups don't really understand it either. Often they come up with meaningless phrases such as writer's block which don't really exist and are rather signs of burnout. But yeah, don't listen to people like this, they tend to use their backgrounds to make false claims using survivorship bias to back it up. Realistically all the best writers I met in my life have only actually sat down to write for maybe 2-3 hours at most at a time of which they aren't even writing for. Like anything writing is a skill which requires mastery that most people do not have the privilege or opportunity to learn. And even those with money and time can still never learn how it works.
On the one hand, lots of the advice seems relatively sound and helpful to those who want to express their ideas clearly and engage with a wider audience.
On the other, some drifts into influencer type audience building for the sake of later monetisation with the prospect of this monetisation luring people into buying relatively expensive courses and other material. It all feels a bit like a pyramid scheme: "I changed my life by writing online. You can too."