It’s not entitlement. Complex software should be maintained, be it free or paid, be it proprietary or open-source.
I personally cannot even use Vital because of a constant monitor flickering bug on my setup, there have been no updates with bug fixes since 3(?) years ago. Fortunately there are other good synths as well. Vital is a great synth as is, but you shouldn’t assume everyone’s experience is the same.
I hope the dev is still alive and well, it’s understandable they lost interest both in the project and in communication about it; I’m a fickle person and have had a similar experience with my own stuff. Maybe Vital already reached its end, maybe not yet.
Vital mostly works and we can use it, but as one guy once said:
“Life is too short to waste dealing with unmaintained software” (https://gwern.net/choosing-software#maintenance)