"owner of a certain glitchy boy"
the source just says that "it was an annual series of fighting videos"...
the flavortext is referring to glitchy boy, now known as glitch productions, owned by SMG4.
though technically it's owned by kevin and luke lerdwichagul who manufactures SMG4 but basically it's owned by SMG4 so who really cares...
anyways, the "annual series of fighting videos" referred to is none other than "war of the fat italians".
although warofthefatitalians.htm and wotfi.htm both are existing pages, both redirect to wotfi.htm.
(no flavortext)
this time the source is packed with a puzzle this time! ^.^
now we need to get the year for each wotfi listed, removing the 20s at the beginning.
looking through the series and narrowing it down, we can get the exact years we need:
have a nice sing-along together instead of insulting each other - 2019
fight weegee at the end - 2014
begun with a staredown for a mario party game - 2015
retrieve smg3's notebook from mario - 2023
all i gotta say for this one is "waluigi" - 2018
three two one zero - 2021
it was all because of a youtube remote - 2020
...which gives us our final answer: snowrut.