Does Christina Aguilera's The Voice "churning hamster wheel" criticism hint at its larger problems?

The Washington Post

The NBC reality show revived the pop superstar's career in 2011, premiering weeks after she flubbed the National Anthem at the Super Bowl, nearly fell at the Grammys and was detained for public drunkenness. The Voice gave her career a boost after she seemingly reached a plateau in 2010. So for her to take take shots at The Voice after two years off speaks to the flaws of the singing competition that has failed to produce a successful winner. Aguilera called the show a "churning hamster wheel" and an "energy sucker." “You realize it’s not about music,” she said. “It’s about making good TV moments and massaging a story. I didn’t get into this business to be a television show host and to be given all these (rules)." Her comments seem to echo fellow The Voice judge Adam Levine, who has also criticized the show for not being serious about its winners.