Showa Ghidorah had pretty stumpy legs supporting a lot of mass. I get this design really capitalizes on not having a human in a costume, but I don’t think it defies physics any more than the original.
If anything, the 2019 legs at least muscular.
This. Showa Ghidorah is like a powerlifter 10 or 20 years after their prime. Legendary Ghidorah does calisthenics on playground equipment and has a fitness channel on YouTube.