What's the questions-to-answers ratio to make it acceptable to write "CEO here" in a topic, in your opinion?
Not everything is an algorithm or ratios. Hopefully you know that.
How much and what would he need to post so damage control would have been done (and successfull) in your eyes?
See above.
Just asking in case I become a CEO and see someone having a solvable issue with my company's sercice.
Theres a solvable issue when your site doesn't deploy. And then theres repeated issues that cause you to send life changing / threatening bills to customers.
If you think they should be treated the same, let me know when you become CEO so I can avoid your business as well.
Good luck with your career though.