it amuses me how the dps check this tier is pretty high compared to recent tiers, and there's a sudden uptick in the number of anti-parser posts.
the "unwritten rule" regarding ACT has always been "don't be a jerk with it".
I can guarantee you that most of the community's active playerbase uses it. It's invaluable for seeking self-improvement.
As pointed out, there would be outrage if they took actual action against it. The rule against it is there just so they have an actual angle against those that use it to be a jerk.