Good point. There's also some discussion about how the wiki and character sheets are intimidating to new players. It might be a valid preference to keep character creation as close to RAW as possible.I must respectfully disagree, the DM's have enough going on to worry about this.
Did I understand correctly that this math problem only comes into play at level 5? And then increases again at levels 10 and 15? (I assume that these levels are where monsters/NPCs gain extra AC compared to PC's to hit abilities).