That's spot on.
And it will be a very common sentiment regarding marketing. Many devs don't like "bullshitting", it's the exact opposite of how we're supposed to do our job. And while it's understood marketing has a huge impact on sales, one can still take a healthy distance from it.
I think this post is about linkedin moving from a generic work focused SNS to a business/marketing eldorado, and how the author isn't happy about it.
We'd see probably see the same kind of rant if Salesforce pivoted to become a Github competitor.