It's perfectly possible to have suffered shitty hours/below minimum-wage pay/poor management/etc. and at the same time be sad to leave. (The sadness then being leaving a project you're proud of and the community that loves it.)
Indeed; it's the kind of project I'd be personally willing to work on for free as long as savings lasted. Whatever the crap is going on at Squad, there's no denial that this is one of the best video games ever, especially if measured by amount of kids who actually learned advanced physics in order to play it better.