Bullshiit and sweet apple butter.
I've got a S&W M&P 9 CORE with a Trijicon RMR and suppressor irons that I use for everyday carry in rotation.
Huge, bright 13 MOA amber dot that's super easy to get on target fast.
Never needs batteries and the tall irons co-witness in case, for some bizarre reason, the dot doesn't work
It's small and recessed into the slide and is much more unobtrusive than you might think.
It's simple, easy to use and fast, fast, fast.