Yes, I'm mainly complaining at the choice of examples, which don't seem to back up the claim of being "rg on steroids" at all.
Typing § is not very easy on most keyboards, and is actually impossible on some keyboard-OS combinations (including mine): https://en.wikipedia.org/wiki/Section_sign#Keyboard_entry
Some diversity doesn't hurt, though. On my keyboard, it's actually easier to type than the backslash for starters.