Quantum Computing first came into the hypecurve in 2011 and was in very slow uphill towards 2018, but disappear from the curve in 2019. (As of now) I am pretty sure that it is not because Quantum Computing became mature technology passing Plateau. Then does it mean that it is in chasm without passing the peak and completely gone out of the industry ? or It is still working actively in the background and will do some 'quantum jump' sometime in near future. If we see it again as hot topics in the industry soon, Quantum Tunneling applies even to hypecycle -:).
Whatever the truth is, pure intellectual curiosity is not affected by this kind of cycle. Just have fun in the process of learning itself.