Scribble
First Post
Not telling people stuff like Reach and Combat Superiority is bad DM'ing if you're doing it on purpose. I don't think anyone is saying they do that on purpose though.
Neither do I, but you have to remember the DM's Guide advice is (mostly) written for new DMs. It really does take a while to get to know your players, and get a sense of when it's fair or not to disclose info. The more you DM, the easier it becomes to do this stuff by "instinct" but when you're just starting out?