Almost everyone is wrong, and only because; Bitcoin is not at all about all the deep dips but the stabile growth with the high peaks. That's it and that's all of what most of them just don't get.
Everyone is really overexaggerating I would say. There were huge dips in the past and we can't really deny that, people are free to say it like that because it was real and true. Those huge dips were a great opportunity for us to grab some bags with cheap price and then you had a chance to get a bigger profit when it's the right time in the future. There will be always some of those in the future as well, you can't avoid that.