I'm gonna be honest chief, you really don't have to go that far when it comes to Steam profile OPSEC.
Just don't have any revealing / connecting information on your profile, use different aliases / profile pictures, and private your account when playing or at least portions of your profile (which you should have already been doing to begin with if you care about your OPSEC on the Internet). I shouldn't have to make another Steam account and pay for premium again just to play on a single community server (never mind the fact I'd be missing a good portion of my weapons to use even when utilizing an achievement server).
Kiwis are acting more schizophrenic over a fucking TF2 server and their Steam account rather than their Kiwi Farms account as if it was their old Facebook profile with their entire biography laced over it. Just how do you niggas treat your Steam account anyways?