NFI how they arrive at this conclusion as tulips were never intended as a currency and bitcoin is.. I think most of it actually is about their wishful thinking that we get such a situation so they can buy it all up.
Alas they are really hidden long-term bulls.
Bull = bull
Bear = bull in disguise
Someone yet to hear of bitcoins = bull waiting to happen
Would some people like to talk down the value of bitcoins so they can get in cheaper? Sure. But bitcoin is a big boy now. It has been around for a relatively long time (Internet time) and shouldn't be affected by the jawboning of a few people. The only way one should reduce the value of bitcoins is to sell them off and depress the market. But that means they already have a bunch if bitcoins to sell, so why would they want to drive down the price of something they already own? It doesn't make sense.
The comparison with tulips is a little flawed, but it does highlight the maina which people can fall into as they attribute great value to something that essentially has none. Sure, tulips were never viewed as a serious currency. They didn't require electricity or run on the internet. But they did show the trap people can fall into when they think 'it can only go higher from here!' and 'it's different this time!'. Tulips, dotcoms, houses, bitcoins. It doesn't matter what it is, people can turn manic.