The thing is, the show was always focused on Lincoln's life first and foremost, and that includes his life inside and outside his house. As much as we'd like it, we're not at all the target demographic (which I think is boys around Lincoln's age) and I'm sure the show's writers figure that group likes to see Lincoln hanging out with Clyde and the rest of his so-called pals doing guy stuff once in a while, rather than seeing his girl sisters all of the time.
It's too late for this season, but the only thing we can hope for is as they're making the next season, they see that even the target audience is having a negative reaction to Clyde and Lincoln's other "friends" (I honestly have no idea what 10-year-old boys think of them though), and while there's no way they'll get rid of them entirely, hopefully they'll show them less. They're just not that interesting.