As we've grown rapidly, many teams and individuals (me included) have seen our roles change and evolve as the business needs shifted. I'm not surprised by this of course; I joined a startup to learn a lot and grow with the company. But while I like the challenge and the way it's pushed me to learn new things, it can be draining to keep up with the pace of it, especially as the business never seems to slow down.
It's clear though that some folks we hired in the early days aren't able to keep up with the change in their roles and are having a really hard time keeping up. In ops, we hired a bunch of people for QA, and several of them have not been able to adapt to the changes in their roles. A lot of them have been pretty mad / pessimistic and vocal about it, which has been a bit of a drag. I hope they can find something they like better and move on.