The way I see it, non-fiction books are all about distillation of information. Yes most of the information from books is freely available online in some other form, but you'll have to dig for it in many places, and learn from many narrators.
The benefit of the book-length information product is that a single author went through all the possible sources and used their expertise to give a coherent story on a subject. You can think of the book as someone who read 100 blog posts for you and extracted the useful info from them.
If you have meta-learning skills like being to "orient" yourself in a new space, and you're able to judge the quality of information sources then you should be OK, and you don't need someone else to do the distillation for you.
Also the benefit of having the information all in one place reducing the need for "foraging" on the internet to find info might be worth the time saving.
The benefit of the book-length information product is that a single author went through all the possible sources and used their expertise to give a coherent story on a subject. You can think of the book as someone who read 100 blog posts for you and extracted the useful info from them.
If you have meta-learning skills like being to "orient" yourself in a new space, and you're able to judge the quality of information sources then you should be OK, and you don't need someone else to do the distillation for you.
Also the benefit of having the information all in one place reducing the need for "foraging" on the internet to find info might be worth the time saving.