I heavily disagree. To preface - I have a recent and a successful PhD in Comp Sci. During grad school I've known active grads who jump onto the "next big thing". Well, long story short - almost every "next big thing" eventually dies down, every single one of them ended up being a generic Software Engineer after heavily specializing in the "next big thing" because, unfortunately, the cycle of the next big thing just keeps on rolling and within 3-5 years the current "big thing" may become entirely irrelevant, which ended up being the case for them. I understand this might not be very helpful, but I suggest doing the footwork to figure out the intersection of something you truly have an interest in as well as a tech with a potential and specialize in that.