I think that Elon Musk is a kind of person who does not like to be forces or pushed to do something. A man who always make his own decision, always have his own opinion. That is why, due to people forcing and wanting him to integrate dogecoin, he will do opposite. He would even completely opposite, people want to integrate crypto in twitter, he will never do that. Imho Twitter is working great without crypto or any other payments methods, I think nothing needs to add or change there.