Yeah. I have to wonder if for them, a job was a job or if they cared enough about their characters to be put off by it. I don't get the feeling from anything I've seen, heard or read that there were big egos on set (except for Dan's. lol). And with everyone doing other projects at times, well, you know...
I might have been a little bitchy about the writer writing for his wife. Probably in the end they were grateful for the Barn & Julia show as it catapulted the show into the stratosphere which was good for everyone.
That's my best guess and I am usually wrong.