Usually no. But every situation is different. It is usually easier to just join them rather than fight them. Once you're liked and admired by the cronies, you will have a voice and they will listen. Earning trust first is the key.
It totally depends on the situation. I've been on both ends of it. If the cronyism reaches into the management, then no. You have to join it or look for another job. If it doesn't, then you can bring it up to management, but I'd think long and hard before doing so. It may force a confrontation, and you'll be known as the "outsider" that likes sticking their nose in other people's affairs, or just come off as a brown nose taddle tale.