1-Because a lot of people talk trash about it (scam, etc) so that drives the price a little bit down which is good
2-No working product yet but a lot of work is to be done with very competent people, so when the product comes out it's true value will come.
3-Everything else...
I do think that Cardano is a good buy... however a reason to be bearish is that it is so phenomenally hyped. A lot of the price is already based on it succeeding... when that may not be the case. We also have to bear in mind that competitor projects don't stand still, particularly Ethereum, which has that upgrade to 2.0 coming soon, plus is the basis for a lot of DeFi.
I'm not bearish on Cardano, but I can see why some people are.
Exactly... but if they had 20% chance of succeeding, it is already a good bet at the current price.