Yes, I agree with your assessment of Lynch. And we're not the easiest fandom to work with. I imagine it was really hard for him to adjust at first being dropped into the canon pool without Joss as a life-raft and stalwart partner working on the piece. If he's defensive now, it's because he's felt the need to defend himself as fans fight over the canon status of his work and Joss watches (or perhaps doesn't even watch) from afar in silence.