That too, but enclosed hammer and striker fired pistols were not particularly liked for serious combat pistols. A lot of people don't like the Glock for that reason. Not being able to visually check the condition of the hammer puts a seed of doubt in the mind of the man carrying it.
With an exposed hammer you can also easily check whether the firing pin moves freely.
Having vital moving parts hidden and inaccessible removes some of the feeling of control.
These are all good points and help make the point that the reasons the German military wanted an exposed hammer, rather than an enclosed one, were not primarily psychological as was implied earlier.