I've never seen this. At all startups I've been at, there were either frontend, backend, or FS people, but the separation and ownership was clear. They wouldn't

I've never seen this. At all startups I've been at, there were either frontend, backend, or FS people, but the separation and ownership was clear. They wouldn't waste a Java Dev's time assigning them CSS stuff, that's just dumb. There's always little tech debt to start with on backend too.