This article may be 10 years too late but it’s better late than never.
I’m glad also the forum thread’s most triggering thing was someone linking to TVTropes to chime in how Light Novels are easier to read than regular novels (hint: it’s wrong). Pretty peaceful otherwise.
YES GUYS LIGHT NOVELS ARE A BRANDING/MARKETING THING. Remember OEL Manga? This is the same bullcrap. Maybe the magic of radobe shines in the way how it is a “by fans for fans” enterprise (ignoring the billion-dollar companies pigging back on them) so we can have self-cestual nonsense that is your average garden variety light novel best-seller, and the safe space where these terrible ideas can blossom into the same beautiful things that feeds my anime viewing habit.
Girlish Number’s Wataru partly draws his ire in the show, from precisely that. It’s impossible to ignore, once you know, how anime gets made. It’s not wrong to compare Girlish Number to Shirobako in this sense, where words like “gyara” take on a new meaning and unless you know how seiyuu gets paid, or how seiyuu do afureko, the lead character’s cheekiness in the first two episodes might be lost on you.