Elon is working with Doge devs, according to his tweet. I wonder how those cultist feel about this when they used the "[big name HF guy] is backing bitcoin" argument. Now biggest name in technology guy is backing Doge!!!! Remember, Bitcoin may go to the Moon, but Doge will go to Uranus!!!
I don't know about sabotaging the coin itself but if you are acquiring the coins by mining them for a fraction of the cost (because of free or cheap power) you can afford to manipulate the currency in the future by, let's say crashing it (huge sell order). This would screw all the holders who bought bitcoins with fiat money.
Only possible if someone else were paying I would have thought. The impression I have, mining crypto is not cheap. Correct me if wrong.