There are mitigating techniques to work around that.
Another set of eyes, not to rewrite it into safe corporate speech, but just as a safety guard to say “hold up there bud… Stop and count to 10”
Talking about “counting to 10”, you don’t hit the publish button right away, save it as a draft and leave it a few hours/over night and come back to it when your not as fired up. Hitting publish when your fired up is rarely a good thing.
If you want to vent, swear and shout. Write that angry post, but then select all and delete it, take a breath, and start again. 9 times out of 10 you are going to be a lot less fired up the second time around.
Granted the last two require some self control, but that’s what the first one is for.
As you said, CEOs are human too, and as humans we all need a helping hand every once and awhile, nothing wrong about that.