Remchaud attempted scam or is staff on a rsps

Scammer's profile link: remchaud | Sell & Trade Game Items | OSRS Gold | ELO (sythe.org)
Amount scammed: attempted scam for 5b runewild or 30m osrs
Discord ID + Unique Discord ID: DrunkThots#9426 + 838945732962025512
Proof that it's their Discord: (when i tried to add the T was not a capital in the DM he sent me, i dont know if this is his way not to get a TWC or what but yeah, i ended up sending him my discord and he added me.
Explanation of the trade: Went to sell him 5b runewild for 30m 07 and he wanted me to show him the gp on the private server, which i wont do because its an easy ban of my stash. Then he said he would do half and i said no im not losing 25b runewild for a 2.5b trade and my minimum is 5b. He then said im a scammer so i told him to get a middleman which he then tried to add me to a discord server, i said im not joining tell him to pm me on sythe and he said "hes not from sythe"
How they scammed: attempted scam or staff trying to ban rwters
Other relevant trade screenshots: