I'll note, btw:
Making the stealth check is free if you move. Check.
If you -don't- move, then you don't get the stealth check. Well, yeah -- the opponent -still knows where you are-.
Basically -not- making a stealth check every time you move against everything you have Total Concealment or Total Cover from is an optimization for not having to make rolls that don't matter (eg, I haven't trained stealth; I'm not going to bother). But as silly as it is that you have an option to not make the roll under certain circumstances, as long as you do make the roll whenever you can, it makes sense.
Making the stealth check is free if you move. Check.
If you -don't- move, then you don't get the stealth check. Well, yeah -- the opponent -still knows where you are-.
Basically -not- making a stealth check every time you move against everything you have Total Concealment or Total Cover from is an optimization for not having to make rolls that don't matter (eg, I haven't trained stealth; I'm not going to bother). But as silly as it is that you have an option to not make the roll under certain circumstances, as long as you do make the roll whenever you can, it makes sense.