hey there! yes the unsupported command line flag popping up on chrome is I would say expected for the behavior that I have observed. I believe this is occurring because bearhud is, as they advertise, reading info from the chrome window that stake is open on. This is likely done through what is called a proxy, which routes chrome traffic through the bearhud program first, before it reaches the client. This is done but using a command line flag to open chrome (most likely --proxy-server= or --ignore-certificate-errors). The chrome window is basically saying the browser you are working in has been modified so that bearhud can read the traffic going through it and do all of its hud stuff.
Yes i heard they have banned players for winning too much too which is kind of crazy. But oh well, stake is gona stake.