I think at this point writing like stream of consciousness / having imperfect grammar acts like a soft signal and I am inclined to pay it more attention.

I feel for those who genuinely liked using emdashes in their writing

Em dashes are not the problem, nobody cares about their use. Shoddy and melodramatic writing that doesn’t even make sense is the problem.

The point is that nowadays people will see anything with emdashes and assume it is slop even if it's hand written

Certainly has changed my writing style. Now I just vastly overuse commas in inappropriate ways!