Yep that’s right, below the plank length you can’t make position measurements without destroying what you’re trying to measure.
And you are right that it can be fully explained without needing to be in a simulation, that is how these were discovered after all. The simulation angle is pretty far outside of the math of respectable physics.
The reason the simulation hypothesis bleeds into the discussion is because its natural to ask “why” things break down at that specific size. Humans don’t like vague answers like “because god likes that number”, we prefer to tell ourselves stories that fit the numbers into physical things in our minds. Just like the Bohr model of the atom was a useful story about how atoms are structured for decades despite not being rigorously proven (and even being firmly disproven nowadays), one story we can tell ourselves to make sense of quantization is to view it as an attempt at limiting precision for computation.
It is only a story at the end of the day though. We don’t really know why physics was set up exactly this way any more than we know why the big bang happened in the first place. Just lots of different peoples guesses, telling plausible stories about the math.







I am not a fan of this culture of identifying yourself by your problems.
Making a problem your identity just errodes all the great things about the individual. Being an amputee isn’t a personality, and neither is being depressed or having anxiety. People are bigger than that, they have individual interests, skills, and virtues that are much healthier to identify by.
I think of myself as a friend, a technologically inclined person, an athletic person, a smart person, a person who loves games and octopuses, etc.
I might also have some of the traits or feelings in this infographic, but they aren’t me. They are problems that I, the cool techy athletic animal lover, am solving.
Play your strengths, fix your weekenesses. Don’t make your biggest problem into your middle name.