To be blunt, there was no good reason to continue the way things were in 2020. Or 2017, or even earlier, as it stood in the juniors.
The challenge for anyone arguing otherwise, or wanting to go back to those days, is disproving the above. In a way that avoids lazy rehashes of "long journeys" or "low crowds".
With the pyramid... it took almost ten years in England for it to solidify with automatic promotion and relegation in the 1980s. And into the 2000s before it became yet more fluid. It will take time in Scotland, too.