You're not a newfag for not knowing. Thatm comment was pretty much only aimed at people who had prestanding knowledge of that artist.
tl;dr, guy named Matt who goes by Matsu-Sensei on dA.
Liked him originally because he was unique in that he apparently hated the yaoi-bullshit the site's famous for and actually drew some eye-catching stuff.
However, he degenerated to the point of drawing yaoi himself as well as having an all-too aparent fetish for /d/-related breast stuff.
Matsu-Sensei is reason #465 why you should never use deviantART if you're a drawfag.