I don't follow this one little bit. I frequently read stuff about interests that I don't share (this is a good way to find new interests, btw), and I much prefer when the people who are excited by something express that excitement. I wouldn't even click on a link titled "X is Well Executed" because it sounds like a dry document written by a disinterested engineer analyzing something they don't care about. "X is Amazing" is going to be written by someone who actually gives a shit about X, and therefore is much more likely to be interesting.

Enthusiasm is a good thing and not to be avoided. Clinical language is a turn-off, only to be used when clarity is more important than anything else.

It's not writing for people exactly like you to express enthusiasm and interest in something niche. That's good writing for people not like you.

Who am I supposed to write for?