As someone who remembers E making the rounds among the BSD and Linux users in my college dorm when it first came out, there's no way he's only 21 if he was a baby in the late '90s.

From her "Short CV"

"Hello! I’m Kamila Szewczyk (iczelia). I am 21 years old. I’m an expert programmer and aspiring mathematician, primarily interested in compiler construction, data compression, esoteric languages, statistics and numerical algorithms. ... Currently I am a full-time student based in Germany." [1]

And the start of the post:

"The editor in chief of this blog was born in 2004. She uses the 1997 window manager, Enlightenment E16, daily."

[1] https://iczelia.net/cv/

edit: added the [1] at the end of the first quote

The author's name is Kamilla. She was born in 2004 (according to the article).