Lol, yeah. They are a bunch of goobers over there, but on this they are absolutely right. I didn't have a treated space for years, and once I finally invested in treating my gear room, it was night/day difference. That money gets you so so much further than spending more on monitors. You have literally never really heard the monitors you have right now, even if they are desktop consumer speakers, until you've heard them in a room that has stable acoustics. I bought my shit from a company called GIK but have seen tons of dudes make their own traps and panels from rock wool/insulation and 2x4s for pennies compared to what I spent. I've even bought bass traps for my band's practice space after finally realizing how huge even just a little absorption in a room maters.