There are real-world EFBs that can do this, and there are also real-world EFBs that can’t.
Drawing on the map has nothing in common with drawing on the charts from a technical aspect, which is why it is considered a separate feature.
This time, we have focused on drawing on the charts. The reasons behind this are many, but the main ones are the fact that it has been asked for way more often, and that the technology that we ultimately have to build for this feature will be at least partially transferrable to a scratchpad feature - meaning that we almost get two features for the price of one!
If you feel strongly about drawing on the map, please create a dedicated topic in the Wishlist ! When done, I will tell people in "Ability to annotate/draw on charts " to check that topic if they find it to be a useful feature!
Kind Regards,
Malte