"* It’s much better to read the best book on the topic 5 times, than to read 5 different books on the topic once."
Flat out no. Unless you're a freaking machine. Reading different books covering the same topic keeps me interested more. I don't mind the repetition then because I get the warm "I know that" feeling.
"* Eyes that pay read better than eyes that don’t. Eyes that pay more read better than eyes that pay less. In other words, when you pay for a book or a course, you’ll dedicate more to it, so you’ll get more value from it."
Total nonsense. I'm not paying my friends or the library to borrow their books. Next you'll be telling me hardback books transfer ideas better. Well, my e-reader has a hard case. And I paid 300 quid for it.
"* If you read ~1h (almost) every day, you’ll be able to read 60-80 books per year."
If you use all your idle time you can read a book a day. Cooking? You mean reading and cooking. Commuting? Reading. Sitting on the toilet? You get the idea. Waiting for the kettle? Seconds add up!
I agree with the rest.