Void clearly wanted to 'die'. although death is not permanent for it (it'll be back from the sun, I'm sure). it looked more like an attempt at self-destruction via pissing off everybody and everything.
Void could simply have ripped apart Thor but for 1) Thor-fan protest 2) some Earth-based hero needs to stop him and 3) Avengers are reassembling... so Thor was allowed to live and given a few boosts to become one of the heroes.
seems ALL the power of Asgard/Odin = approximately one Hellicarrier used as a bullet 😄