What you mentioned about Elon musk which made many digital currency enthusiasts follow it is very true, as for the reason they follow Elon Musk on Twitter is to find out about the development of digital currencies that may be of interest to Elon Musk, so they can immediately buy it for profit.
Yes, but besides that, basically an Elon Musk also wants to advance his own business which will link it to the world of Cryptocurrency, so this is clearly very profitable for cryptocurrency as well as for crypto enthusiasts, because with that the crypto space will also progress.