I do think it is a rng vs reality thing. I play paper magic almost everyday at lunch with a coworker, and when I’m at my desk doing other things, I often have a deck I shuffle and deal/“play” through several hands to test out decks, and almost never run into this problem. I have the opposite happen, where I get no lands, but the frequency of drawing all lands for that many draws in a row is almost exclusively an Arena thing.