The criticism is fueled partially by reports of extramarital affairs by both Jon and Kate and questions about whether the Gosselins should continue filming even as their marriage appears to crumble before a nationwide audience.
Both Jon and Kate have denied the affair allegations, but have acknowledged they are having difficulty in their relationship.
The rift in the couple's decade-long union has become apparent in the show. But "Jon & Kate Plus 8" has seen some of its highest ratings since the Gosselins' troubles became tabloid fodder.
"I think all parents, and anyone who is married, are always going to have times when you're upset with someone," Jon said. "This is a reality show, so you're going to see real emotion."
Nearly 10 million viewers tuned in to the season 5 premiere almost two weeks ago to watch the obviously tense and noticeably distant parents try to get things back to normal after discussing their marital problems.
The ratings roll has bested the show's past average audience of fewer than 3 million viewers.
Both Jon and Kate have differed on whether they plan to continue filming their hit show.
Despite their marital woes, Kate told People the show will continue.
"I must go on and provide for my kids," she said.
But Jon had a different take on reality stardom.
"Jon does [not] view the show as a job, necessarily, but he does recognize that the show has provided incredible opportunities for him and his family, so he'll continue to do the show as long as it benefits his children," Tan said. "But every year, when there's a renewal contract that comes along, he does say that they have family discussions about it. They bring their children into the room. The children account for 80 percent of the family. And if anybody doesn't like the cameras around, then they'll stop production."
Claiming to be hounded by fans asking for autographs, Jon said he isn't above quitting.
"It's not my job," He said. "My job is to take care of my kids."
The Associated Press contributed to this report.