I guess by some weird logic if it's Eggman's machine and the help he needed was something that was his fault to begin with... maybe he deserved it and maybe we would've needed his help. But he originally stole energy from our planet and the machine held it and could return it.

[It seemed.... strangely out-of-character for Sonic, given even he knows Tails is smart enough to push a few buttons and pull a lever. He kind of thinks the whole thing was just silly nowadays.]