This is actually good for bitcoin
... because it attracts new players to the mining game
... because it will make the argument that bitcoin is bad for the environment weaker
I agree, the "any news is good news" is a fun game to play.
If not by the old mining power coming back online, it will be solved either by the next difficulty change, after which the Bitcoin network will again operate at full speed but using less energy, or by market powers if there are miners standing by due to not being profitable, which they now may be due to fewer miners to share the rewards with.