Bitcoin is not in a bubble. Get that bubble idea out of your head.
One year ago, one bitcoin (XBT) cost 1.52 Dutch tulip bulbs (DTB).
Today, one year later, one bitcoin costs 1.53 DTB.
That's a mere two-thirds of one percent increase in 12 months.
That doesn't even keep pace with inflation.
That's not a bubble.
Current price: XBT/DTB = 1.53062