You can't rely on his tweets, there's no proof whether he want to create something new with Doge. There's a chance he only want to play with the market as many people panic buy or panic sell due to his tweets.
There's a possibility that he will move to another coin and leave Dogecoin and those Dogecoin bag holders should prepare for this scenario, the guy is getting a lot of negative feedback, if he wants to stay on he will have to support coins with good value that is far better than Dogecoin or he will become another McAfee at least predicted Bitcoin will worth 1 million dollars while he creates a FUD on it.
Elon Musk is indeed a person who cannot be trusted, even he is willing to manipulate the market to be able to generate profit for himself.
I agree we should be prepared for the worst case scenario that will happen to Dogecoin, it is very possible that Elon Musk will just leave
Dogecoin and move on to other coins. If we see the negative feedback that Elon Musk gets, it is very possible that he will become the next McAfee.
The most important thing is that we don't be affected anymore by everything Elon Musk said, and also for Dogecoin holders to be more careful,
my advice is to sell our Dogecoin if it is already profitable. Because there is a potential price dump for Dogecoin, if it was abandoned by Elon Musk.