3. Tulips are not scarce

Bitcoin has a hard limit of 21 million Bitcoins. You can't just grow more Bitcoins like you can grow more tulips.

This point is incorrect. 'Tulips' were fundamentally scarce, you couldn't just grow more. This is because ordinary bulbs were not the focus of the tulip bubble, it was rare specimens (such as the Viceroy, Semper Augustus and Admirael van der Eijck) that you couldn't simply selectively breed. The phenomenon was caused by a virus but not understood at the time.