As I have mentioned before, there is no 'rule'. Quoting is sometimes desirable, or even essential. The point I was trying to make a few days ago was that wholesale quoting is sometimes unnecessary, and can make a thread unwieldy. We have had instances where a member has quoted a whole paragraph followed by a question simply to say "The answer is yes". In such a situation, the quoting of the question may be helpful. The quoting of the whole passage about which the question was asked is usually not.
In the initial efforts to tidy up threads, a couple of quotation-deletions were a little over-zealous, but that does not mean that massive quotation is desirable.
There are always grey areas in moderation. For example, in this thread, I deleted four posts which, being about a a typo that had been corrected, were irrelevant to the thread as a whole. By the time I had done this, Raymott had submitted post #10. I was then faced with the question of deleting it, because it referred to posts now deleted, or leaving it because it made a point about the deletion of quotations, which clearly makes some people unhappy.
As I, personally, have no wish to act as a censor except when posts contain clearly offensive material, I left it - but the result is that this thread has now become somewhat side-tracked.
May I suggest that we now leave this thread to any further discussion of the original question? If you wish to express your feelings on the subject of quotation, perhaps it would be a good idea to start a thread in the General Members Discussion Forum.