JetBrains is valued at $7 billion by the Bloomberg Billionaires Index and they build their popular IDEs in Java... So Java isn't de-ad outside of corporateware...
I know it's used by inertia in some corporate envs and thanks to some GC tunings it looks that it can run really well over long time.
But even with GraalWM, the performance outside big irons leaves much to be desired...