Definitely only that reason and not that Rocket is getting soft on kids or people in general after everything they've been through. Besides, he's not wrong. Peter scoots out of the way along the bench so he can get a better look around Rocket's fuzzy body to see just what he's inspecting. Rocket's nimble and his little claws track and draw out Peter's work.

"Wher--oh. Oh, right. That makes sense." He should have thought to do that himself, really. The whole point of this was to make the device Rocket showed him safer. He's grabbing up a pencil to make a note for himself as Rocket gives him the all clear.

"Wait like, right here? Right now?" How else are you supposed to test this, Peter? He's at least got his mask he can pull on to protect his eyes a bit better. "Should you like, get a helmet or something?"