I don't think that Dogecoin will grow even higher, let alone become a new BTC, because I think it's very difficult for Memecoin to compete with coins that have very high capitalization and popularity like BTC, and I don't think Dogecoin is worth comparing with BTC because the difference is very far, namely like copper and gold.
if asked possible or not, this could be a possible thing and just a dream.
but in history what musk has done may not have been against the tech world by taking such a huge risk in proving it, and it's between the life and death of musk's career and wealth if he were to do this absolutely insane thing "wanting to replace the top notch crypto"
There is no exact reference source, that Dogecoin can beat Bitcoin going forward, from supply, purchase value and the large community that is under the two coins, Elon Musk has an important role in advancing Dogecoin, but doesn't think he has a chance to make Dogecoin in on Bitcoin, this is really a dream that is impossible for them to achieve, because dogecoin has to go through many levels, before reaching peaks like Bitcoin