Instant feedback is good for learning. I sometimes feel that old-school photographers are just kinda bitter that it's a lot easier to take competent photos today than it was 20 years ago, and think it's not real unless you're carrying a light meter around.
I can take a photo without a light meter or perfect focus. Zone focusing and the zone system are a thing, even today. https://petapixel.com/how-to-use-the-zone-system/
The idea behind making things hard for yourself is to develop a discipline and way of seeing the world without assistance. When you get this superpower, you will use the digital aids in a completely different manner.
The instant feedback is so bad for the development of photographers mind, that some brands like Leica and Fujifilm have a digital camera without screen on their back.
I guess the best thing to do would be turn off exposure preview (so you can't see what settings are going to look like and the EVF becomes "dumb"), and perhaps buy a tiny 512MB SD card or something so you can only fit 26 or so RAW files on it :)