It is very much legit. Even the rest the Earth not being obliterated was because Blast used his dimension gate to divert all of it force upwards once he realized it couldn’t contain the energy
Bringing up Toriko, the only reason the top tiers still beat Saitama and Garou is because of still comparable speed (Reacting to Darius’ Extra-Dimensional Laser) and sheer Hax like Food Luck and Minority World. Physically, Saitama and Garou should dominate them but their both simple bricks as mentioned
Like, it even gives clear reference points. You have blasts portals appear above the earth and direct the energy away.
We are then shown even further away there's now a large portion of missing celestial bodies.
It wouldn't go that far in showing it was destructive force if it was just going to be an optical illusion