The nature of the blog typically cater towards the intended audience.
The CIO of Disney doesn't give a sh*t if the protocol is called WireGuard or OpenVPN or that if it uses AES-256 encryption - he/she wants someone to tell them that their developers are securely accessing their infrastructure. Full stop. If/when Fly gets to that level (let's say $500M in revenue) their blog tone will likely change - their audience is almost primarily developers and startup CTOs...for now.