A recent joke on social media by tech giant Michael Dell has once again sparked widespread concern in the Bitcoin community. In response to a user, Mr. Dell mentioned "enjoy Bitcoin", prompting speculation about whether he had any further interest in Bitcoin. Mr. Dell had previously mentioned Bitcoin in a humorous manner on social media several times. In July, he called it "funny" and posted a funny picture of Cookie Monster eating Bitcoin. Although Dell opened up Bitcoin payments in 2014, due t...