Do you think the only reason cthulhu destroys the world when they're summoned is because they're super cranky that a bunch of weird land dwellers in silly costumes made so much racket that it woke them up and they barely get enough sleep as it is and work night shifts?
Do you think if at the moment of waking Cthulhu up someone just... went up, shushed all the cultists, and just... soothingly offered Cthulhu a nice cup of tea or something, let them lay back down and just... rest for a bit longer rather than making more noise to wake them up? Maybe they'd go back to sleep again or at least have enough time to get their head together so they could just... you know, talk instead?
...I bet Cthulhu works retail too, poor thing.
