The ones who says Bitcoin is a garbage are only saying it because they either have reputation,businesses,self interests and other things that might damage them in any way Bitcoin could. One other reason is someone had paid them to say such things, to tarnish and to demote what Bitcoin currently have. Now we see what potential it has and we the only ones who utilizes Bitcoin are able to understand what are it's uses to help some of our economic problems, individually or common groups and companies. As a whole crypto currencies is on it's stage of development and we haven't reached it's full potential yet. Now if they say it is still a garbage then it wold be too late for them to realize and accepts if this goes mainstream, that only means regret for them.