I think it's the "snobbishness" comment that probably gets my back up a little. It implies that we sit in front of our TV screens waiting to be disappointed, yearning to point out that a sitcom isn't sophisticated enough for our finely-attuned comedy palates. I mean, I loved We Are Klang and really like Miranda - both what I'd call big, silly, larger-than-life sitcoms. Both with the occasional creaky gag - the difference being that the charm contained in the characters, the performances and (yes) the "love" that's apparent in both shows - more than makes up for the occasional weak line.
The real issue with Big Top (beyond the bad scripts) is that it lacks any discernible charm - and sitcoms really do need charm, whether they are darker comedy (e.g. Psychoville) or incredibly upbeat, throwaway shows.
By the way, I'm sure we all appreciate the irony of a bunch of comedy website members debating a slightly harsh online criticism of us. Perhaps this is a cunning ruse by Mr Jacob to teach us to understand how criticism can offend? 
The difference, of course, is that our efforts aren't being funded by the licence fee. It may be one day, but for now, it's not our job to make people laugh (in most cases). 
When there's no decent, sophisticated comedy on TV, I often like to spend a couple of hours re-reading my own posts, in order to learn to appreciate witty and intelligent humour again. I've just been reading something I posted a couple of years ago about On The Buses... *wipes tear of laughter from eye*