I learned in 2006-2007 with a single VOR and no GPS. Worked well enough I took that plane on a 200 nm each way trip along the Appalachians from furthest WV to KAVL and back. When I fly by pilotage, I still fly straight lines on the sectional (drawn and highlighted), I never follow roads.
Last fall I went from east AL to Griffin, GA and back, and had taken the GPS card home to update and left it. Even dodging the build ups around Lagrange (KLGC) didn't throw me off, it just made my course less straight. And I stayed out of the Bravo!
Learn the old way, and practice from time to time. If you need it, the roads are there as a backup. Pick landmarks, keep up with passing airports, and head towards your destination. I find flying generally saves me 25-30% of the driving distance, and 60-70% of the driving time. Spin the Whiz Wheel with forecast winds aloft and go somewhere!