IMO ...... Very rare for someone to hang on for the entire ride.
He most likely sold years ago.
ET's @Baron was into Bitcoin a few years ago - I wonder how he is doing?
Maybe he will chime in.
RE: Everything else being equal, is it better to buy higher or lower strike call?
Buy the lower strike (buy as close to ATM as you can afford) - the debit will be more but the payout much higher.