I hadn't really thought about the effects it would have on Crypto tbh, but I would say declaring it over in April is extremely presumptuous. Nobody knows what direction its taking at this point, and its entirely likely it could be with us to stay, like any other seasonal flu. Ther's simply no knowing for sure.
But i'd say it's pretty unlikely on the basis that SARS was around for 9 months before succumbing to the summer and hygeine practices, and that was only 8,000 cases in total. We're at somewhere over 60,000 as of today, and the virus is clearly far more adept at spreading, so there's very little humans can do to stop that. We have to really depend on seasonal effects for now and isolation practices to mitigate the damage as much as possible.
Basically, if you are one of those 'experts' saying anything with confidence, you're probably wrong.