Find me a user from that era that made 20+ posts all magazine level quality and let me see. I don’t think you will because you are parroting what you’ve heard from other people.
I'm not parroting because I joined the forum in the middle of 2017 and although I was off it for a while I did live the CM era when it was active.
And well, it's clear that not all the posts had the quality of a magazine article, but I don't think companies search for that in each post when they pay for advertisement. There were many short posts that attracted a lot of merit. I especially remember the ones by o_e_l_e_o and suchmoon.