It’s worth bearing in mind how people actually behave: if Zug is so powerful and vengeful that opposing him would be flat-out suicide, people don’t. They may quietly nurse grudges and wait for misfortune to befall him, but they don’t take overt action. Siding with Urk is a lot more understandable once we note that people only actually do it when it is reasonably safe to do so.
It’s worth bearing in mind how people actually behave: if Zug is so powerful and vengeful that opposing him would be flat-out suicide, people don’t. They may quietly nurse grudges and wait for misfortune to befall him, but they don’t take overt action. Siding with Urk is a lot more understandable once we note that people only actually do it when it is reasonably safe to do so.