Europe’s labor market is sadly still mostly out of touch with how startups work. It’s stuck in the last century. I’m not sure if this is due to tradition, or due to the fact that startups are much harder to start in Europe in general, so people on both sides of the hiring process have less experience with it.
Two years is more than long enough to join a startup, build 3 things, and see that your equity is never going to be worth anything, and find a new job. This isn’t anomalous or weird.