I understand your topic & i never heard about celebrity bitcoin owners. But personally i believe that they should involve and promote this. If so it will be more important to bitcoin future.
I agree, Celebrity are always good for promoting, influencer like this are used even since in ancient egypt. Some people especially teenager nowadays are very easy to get influenced.
because celebs are famous and has a good number of fans as compare to random people that advertise . thanks for your small trivia , didnt know that celeb advertising did exist a long time ago . depends on the celeb that advertise the product or the project if what are thier age group because it can also give an impact to the age of the viewers . like if the celeb is a kid , kids are also will get attracted the most but this aint a kiddy product because we are talkin about cryptos .