For what it's worth, despite the common perception that the Planck length is the the grid-scale on which the world is quantized, or the smallest measurable dist

For what it's worth, despite the common perception that the Planck length is the the grid-scale on which the world is quantized, or the smallest measurable distance, or various such things, the Planck length is not actually known to have any particular physical significance; it's just the length that falls out of combining various other constants of significance. It's not unreasonable to guess that it will eventually turn out to have some significance in itself, but if there is any, it is as of yet unknown.