It's still a problem for microservices architectures, unfortunately, especially if you want to support dynamic scaling of some kind. A few seconds is nothing if you expect that your server will be up forever, but it becomes a lot if sometimes it goes down for a bit to move to a different machine, and that takes seconds for your customers.

Also, JIT languages have a very poor habit of doing a terrible first impression because of the warm-up time, especially in Java. If you are delivering applications to customers, that becomes a real burden - the very first time they use your shiny new application, everything is moving like molasses, until the JVM decides it's JIT time...