As a writer I deeply appreciate and respect your thoughtful, wise and indeed, very true points.
I spent no less than six months looking for a site that insisted on high submission standards. Hub thank God, does. Do I make grammatical and spelling mistakes from time to time? Sure. Who doesn't? I kick myself and ask people to please email me if they find errors.
I can attest that you DO lose cred and second chances. I wrote a rather, I won't say scathing but I will say critical point in an article about a feminist author- pundit regarding feminist-mother issues. In a nutshell I said Gloria Steinem's niece wrote that GS was more sympathetic to the mothers at home, not working, than so and so. I made a couple possessive mistakes in my piece. Ouch. Instead of addressing my CONTENT the so and so woman called me out on the mistakes and slammed me as a writer or "whatever you call yourself." Mind you, she that doth protest too much, but she served me notice that grammatical and spelling mistakes stop the reader in their tracks and the flow, cred is lost. I will say the rest of the piece was error free, I think, so she clearly wanted to discredit me more than she wanted to engage in useful debate which I think is small-minded.