you suggesting that there is a continuity of spacetime rather than a pixelation, which is perfectly valid, the whole problem with planck units is that they are extrapolations, just like the infinity or the point particle, they are mathematical extremes.

the geometric structure of spacetime at planck scale is problematic, considering how you might visualise a planck polyhedron so that no space is defined in less than whole planck units i.e. all dimensions of length are whole numbers.

you have to do some topological trickery to make a discreet planck volume that works.