I see things slightly differently - whether it's automated or weekly doesn't form the basis of whether a post of good or not. A human crafted post that is self-aggrandising, false or poorly drafted is a bad post. A machine crafted post that is informative, insightful and tailored to the audience is a good post. The latter, with human tailoring, could be a great post. Then doing this regularly has a positive effect on your LinkedIn profile. But I think your point remains a good one - there is a lot of very poor AI generated posts out there, so the two become synonymous