Totally agreed! I think Brew will eventually be remembered as "this bad way of entering the topic of interest", like BASIC for programming, or a learning js / web programming through a framework first.
It's teaching you the wrong way, making you almost illiterate about pm when you enter the real thing (here Linux/UNIX world, or Python after BASIC, vanilla web concepts, etc.)
Exactly why I hate Brew with passion. In the doc you find: formula, bottle, cask instead of package and... no idea what the others mean. I have no time to learn and remember the mapping, which exists for no other reason than the author trying to be cool.