sharing your opinion in a constructive and non-offending fasion is not only allowed, but encouraged
what's unnacceptable, is when somone shares their opinion in an offending, rude, and insulting manner.
instead of offering kind suggestions, and trying to remain pleasant, you have consistantly insulted, flamed, trolled, and bashed. when you start threads with the explicit intent to incite negative feelings towards arc as a whole, that is not helpful.
i've voiced my opinion on the arc4 too. when it first came out, i felt that it should have knurling on it, and i said so. i didn't start new threads complaining about it, i didn't say things that were meant to reflect negatively on arc. i did so in a constructive and positive manner.
the same can be said with people who wanted tailguards! they did so in a constructive and positive manner, and it got results.
so you see, theres a difference between trollish complaints, and helpful suggestions.