Up until relatively recently, cryptocurrency hadnt captured the interest of the general public; it was reserved almost exclusively for the engineers, developers, and entrepreneurs who had been involved in its conception around a decade ago.
However, the bitcoin bubble in 2017 caused cryptocurrencies to soar in value, and led to millions purchasing cryptoshares and even setting up their own mining farms.
Despite the considerable drop in the value of bitcoin over the past year, experts are predicting a new cryptocurrency boom in the near future, possibly from 2020.
Read more :
https://paperblockchain.com/13-celebrities-who-back-cryptocurrency-and-may-own-millions-in-bitcoin/There are many other celebrities who have been part of crypto for a long time. I think some of them do it just for publicity and then disappear when their sponsored token starts devaluing.