I once did a safety investigation for an aircraft who flew through a naval firing zone restricted area (whilst firing taking place) overseas.
There was about 10 pages of 6pt notams for the copilots to read every day. Very easy to miss one area as the notams were for many FIR's and contained a jillion lat/Lon's and restricted areas. No ops support to pick the relevant ones.
Until they move away from CAPS (also terrible for the human eye to read and skim) and embrace technology post 1992, then this will happen forever.
As for auto maps, this is a very very difficult problem. Notams aren't in specific formats that a computer can easily go through. Often things will say "A circle of radius 200nm extending to .....". For a computer to understand that is near impossible. The only reliable way of plotting these is human, which is prone to human error.
There is no good answer. Your options are:
1) Bad computer interpretation
2) Better, but time consuming human interpretation, or
3) Some kind of miracle that the worldwide notam messaging system awakes from the dark ages.