Why? This was a decade ago, and they were basically children when it happened. The product itself is a fine product and I've used it with about 35 consulting customers since, there aren't too many other options, and none of them are as good as PagerDuty.
As long as there's an option, I'll use it. Unless they have made amends by screwing you out of $20 million, there's no reason to support this kind of behavior, even if it happened 8 years ago.
If they were children, why were they running a company? Why would anyone join a company run by children?
Me too. My team bought a subscription a few months ago, I'll try to push a switch to a competitor.