NikHe changed his custom url, here's the working one: https://steamcommunity.com/profiles/76561197998647224
He got all of his unusuals from here: https://stntrading.eu/profiles/76561197998647224
For me it looks like he bought them just to put them on his steam profile to look "trustable".
"Hey look I'm a serious trader, I have unusuals to trade"
No tradelink, profile comments disabled, all of profile badges were obtained in a span of few days, so it's a no-no
Great find, that's really suspicious he changed his custom URL He probably found this thread and was trying to hide again.
Out of caution I went ahead and reported his account on Steam.
Thanks for the feedback everyone, I appreciate you all.