Em-dashes may be hard to type on a laptop, but they're extremely easy to type on iOS—you just hold down the "-" key, as with many other special characters—so I use them fairly frequently when typing on that platform.
But why when the “-“ works just as well and doesn’t require holding the key down?
You’re not the first person I’ve seen say that FWIW, but I just don’t recall seeing the full proper em-dash in informal contexts before ChatGPT (not that I was paying attention). I can’t help but wonder if ChatGPT has caused some people - not necessarily you! - to gaslight themselves into believing that they used the em-dash themselves, in the before time.
Em-dashes are easy to type on a macos laptop for what it's worth: option-shift-minus.