All a matter of perspective and it is subjective, but I just went back and scanned the first 30 or so posts on this thread, and I would not label any of them as an 'attack'. I think people gave good reasons as to why the advice was questionable, and the OP himself started with a comment about how hard it is to time the market (and then said this was a 'slam dunk'). It's almost as if he was 'attacking' himself? Some comments might have had a bit of humor/sarcasm wrapped in them, but I think you have to be pretty thin-skinned to call that an 'attack'.
At any rate, if I have an idea that goes against conventional wisdom, I expect it to be challenged pretty hard if I start a thread based on it. Seems I better be ready to defend it. Personally, I like to be challenged on my ideas - I may learn something new, discover something I hadn't considered, or at least get a better idea on how to address the issue with people who have a different viewpoint.
Heck, this whole forum is a testament to toppling the 'herd mentality' - you can't retire early, you can't manage your own finances, you can't avoid going deep into credit card debt, you have to keep up with the Joneses, etc. I guess you could say that 'dirty market timing' is the subset herd mentality of an anti-herd mentality group (you just can't say it ten times fast).
edit/add: Often there is a good reason for 'herd mentality', it is the combined wisdom/experience of the herd.
IMO, you should not be afraid to post an opposing view. Just be prepared to defend it.
-ERD50