The title had to be changed to be compliant with the guidelines. It also has to fit under 80 characters. It’s not an easy task and you’re welcome to suggest a better one.
I'm just pointing out that it's weird to say you changed it for length reasons if you make the new title the same length.
I’m saying the reason I couldn’t include a16z is that I can’t fit it into the title along with all the other details that seem important, notably the name of the company the article is about.