Honestly, startup advice articles are lead collection tools for ycombinator and other accelerators targeting "fresh" audiences. You may see similar advice articles from VCs too; blogging makes them more visible and help attract entrepreneurs.
You hit the nail on the head. As a top entrepreneur I spend a lot of my time reading VC blog posts. It's the best way to filter the investors I'm going to bless with the opportunity to invest in my next home run.
I'm being downvoted by VCs with crappy blogs
I can't tell if you are being serious or not, but I actually completely agree that "filter the investors I'm going to bless with the opportunity to invest in my next home run" is the right way to think about raising capital.