What I said in answering the first quote applies for this as well. The size or length of a post depends on the nature of the topic being discussed, and as long as your post makes some sense and is properly constructed, no matter how large it is but it would still get the attention it deserves.
in theory yes , in real world I am 100% that extra long posts get ignored by default, once i have the time I'l use piggy's data to determine post-words-count relation to merit " or i hope someone else can do it as i am kinda slow in this"
and before that is done , i am willing to bet that the majority of merits go to "medium" length posts, too long or too short usually does not get merit, this of course changes in technical posts , but a general rule of life, nobody is willing to read long-ass posts.