[jasonhansel]

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.

[carbocation]

Em-dashes are easy to type on a macos laptop for what it's worth: option-shift-minus.

[sltkr]

Also on Linux when you enable the compose key: alt-dash-dash-dash (--- → —) and for the en-dash: alt-dash-dash-dot (--. → –)

[bigstrat2003]

That's not as easy as just hitting the hyphen key, nor are most people going to be aware that even exists. I think it's fair to say that the hyphen is far easier to use than an em dash.

[wk_end]

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.

[MarkusQ]

No. En-dash doesn't work "just as well" as an em-dash, anymore than a comma works as an apostrophe. They are different punctuation marks.

Also, I was a curmudgeon with strong opinions about punctuation before ChatGPT—heck, even before the internet. And I can produce witnesses.