IMO the problem lies in the term "circuit breaker". For many that means a tiny little 2 pole 200A breaker, for others it is a 3000A 600V breaker or a 15kV 2000A Magneblast that won't fit in your truck, and for others a 230kV beast filled with SF6.
I have had this discussion with several 70E and IEEE 1584 commitee menbers that the line has to be drawn at some point for many of these rules, everyone agrees that there should but no one will say where that line is because the first person that gets hurt resetting a breaker smaller than what the rule states will start taking everyone they can think of to court.
I don't see resetting a MCCB in a residential or small commercial system as something that should require PPE or training, the risk is low, the hazard level is also usually very low. Resetting a 1200A bolted pressure switch that has never been maintained, or a 3000A ACB feeding a bus duct, or even some smaller MCCB's (800A), that is where you start to increase both risk, and the hazard. Of course that is just how I feel, and my opinions no longer count in these matters.