Are marriage/family oriented celebrity reality shows fundamentally bad for their marriages?

Jessica and Nick. Britney and Kevin. Tori and Dean.  Jon & Kate. I see a pattern here. Do you? If I were a manager of a celebrity, I would automatically vote no to any proposal for my client to appear in a reality show that involves having cameras come into their private domain/home and film the intimacies of their lives. It is a death sentence. Wouldn’t you concur?