Zero tolerance for Grammar Mistakes - from HBR

From HBR - Kyle Wiens of iFixit

The author has instituted a zero tolerance for grammatical mistakes.  It is understandable for his business that is involved in writing.  But he requires the same for other non writing jobs.  Grammatical errors when it goes out into the web, makes the organization look foolish and unprofessional.

God is in the details.  Those who make these mistakes betray their eye for details, remembering things and often make mistakes in their work.  Remember what the new CEO did when he took over Korean Airlines after a terrible crash (due to misunderstanding with the control tower staff?   He had everybody go on English training.   Seems very logical.

I am often dubbed as an editor or copywriter when ever I fine Accounting people in making mistakes in the Voucher.

How about you?

Will you hire people who use wrong grammar?