I was trying to answer the question "why people check online instead of reading the manuals". Again, I was not trying to insult anyone. I don't agree that the answer is "people are lazy and should not be programmers" is correct.

Programming is a vast ocean and very few people are going to know every single detail of ever single nook and cranny. If your day to day involves bash scripts, sure, learn and digest all of them. If you are a python programmer and you just want to compress a file you don't need to know all the flags that `tar` supports.