Is Writing Still on the Communication Skills List for Sales Success?

Direct from buyers, a list of grievances about sellers’ communication:
Spelling errors
Casual or overly familiar
Run-on sentences with poor punctuation
Rambling thoughts that don’t seem connected
Too much to wade through instead of getting to the point
Emojis and exclamation points are disingenuous
Someone should proofread before sending
Obviously a cut-and-paste
No flow or story