Do the people demanding it come to Switch even realise what kind of game Persona Q is and how centered it is on the dual screen and map drawing with a stylus?
Would it be that difficult to translate the stylus drawing to pressing a button that opens the map, and you can draw a path by holding a button and moving in the dpad? Go to a square, press another button to open a selection of pins to put in the map, select the pin, and then it's in the map... The walls could be auto-drawn, you can change the colors by pressing another button.
Well, it's not as easy and snappy as drawing with a stylus, but the game already has a slow pace, I don't think it would be too detrimental to draw like that if it is an option (and you could just choose to let the map draw automatically if you're not interested in this).
Seriously, is it really THAT important for Etrian games that YOU draw the map? Customization of the map, okay, but drawing every single thing is too much, and it's hard to believe the game would be worse if the game draws some things for you.