Same. I love my dashes and I’ve been feeling similarly self-conscious.
FWIW I have noticed that they’re often used incorrectly by LLMs, particularly the em-dash.
It seems there’s a tendency to place spaces around the em-dash, i.e. <word><space><em-dash><space><word>, which is an uncommon usage in editor-reviewed texts. En-dashes get surrounding spaces; em-dashes don’t.
Not that it changes things much, since the distinction between the two is rarely taught, so non-writing nerds will still be quick to cry ‘AI-generated!’