How does content like this make it to the front page? This is the index page of a marketing blog. This is spam from rackspace.
Literally nothing is written by "marketing" - just developers. And it's definitely not spam, if you look at https://getcarina.com/blog/push-button-lets-encrypt/ for example it's a complete tutorial on a simple nginix and docker let's encrypt post.
If it ever a marketing blog, I'll happily give myself a wedgie.
This is marketing content... And there's nothing wrong with that! We all market ourselves every day of the year. We may not admit to it or realize it, but it's inescapable.