Angled quotes I use only on systems on which I've configured a compose key, or Android when I'm typing Chinese.
I don't like any kind of auto-replacement with physical keyboards, so I turn off "smart quotes" on macOS.
Anyway I use characters like that all the time, but it's never auto-replace.
I've had a "trigger finger" for Alt+0151 on Windows since 2010 at least.
Em-Dash was really popular with professional writers.
I am, it's on the default German X11 keyboard layout. Same for · × ÷ …
And that's without going to the trusty compose key (Caps Lock for me)… wonders like ½ and H₂O await!