I believe 1 sat / vbyte is an arbitrary/coincidental price level, and doesn't have fundamental significance. The fundamental signifciance derives from comparing total fees with the subsidy (block reward)
but if a block was half full miners get zero fees on that empty space. With sub 1s/vb it's much likely to get full blocks even if the total fees are less in total.
1 sat / vbyteis an arbitrary/coincidental price level, and doesn't have fundamental significance. The fundamental signifciance derives from comparing total fees with the subsidy (block reward)