I mean, he still won 3/4 pvp matches.
Odds are, given the summs, the matches, the CS, and the champions, that this is a low-level account that simply saw "Ooh, this gives CDR and mana, it must be good on Brand", and went with that, because we all do stupid-ass things when we're starting.
So, no, he's probably not trolling, he's just new and stupid.
I see no issues here, seems to be working well for him
hes either new based on his summoner spells and thinks that building the most expensive item multiple times makes him strong or he sells everything for trinities at the end of the game
that cs is hilarious
When i was new, I used to build like 3-5
on Teemo and Berserks, was I trolling? No... I was just experimenting, i was a noob.