That is true and convincing - however has the same weaknesses - if you do not have a mentor who continually reminds you about stuff - if you never learned to take good notes - will all be like "in one ear and out the other" - whether watching U-tube while something else going on in the room that interests you more, or having a book on the table for two years that has never been opened - neither going to do you much good, although you can claim you "watched the video" or that you "have the book".
From what I have found, that I was not ready for - mistakes on websites - Nosler load data for example - 7mm STW 160 grain bullets, H1000 powder - exactly the same powder loads with 140 grain bullets - and that "Start" load for 160 grain is higher than was listed as Maximum in several previous Nosler manuals. Mistakes in books - same mistake in Nosler 9 manual. The belief that a manual or loading recipe gives you a guaranteed safe thing - versus it being a report of what they found to be safe, with their stuff - explains why if you read 8 sources, you probably get 8 maximum loads - none tend to be "wrong" - they reported what they got, with their stuff - what are you going to get, with your stuff? Have you read a reloading manual that did not tell you to work up to a load? Do you do that, or just go straight into a recipe that came from "somewhere".