No it's not. It's not the best thing at all.
If everyone doesn't exhaust the correct channels for reporting faults and elects to write the CEO, what do you think happens to the people with genuine faults and the bags of mails/letters they get? They get dumped to the normal support channels, diluting those with genuine escalations, that's what.
If you look at some of the examples above, it's people that don't KNOW (or care, in some instances) about the faults/issues - not that action hasn't been taken.
ISP is the first route of redress, not the CEO. That's just foolish.