I disagree with the other posters. It is by no means a common problem.
It is very unfortunate that it happened to you but these things do happen from time to time. Machines will break, people will curse!
That clicking could be bare grinding metal or it could be your paranoia running away with you. My seal doesn’t leak but when I perform the same test (spin the wheel on the center stand) I can also hear feint sounds coming from the final drive.
Get that seal fixed when you can and enjoy your bike. Don’t get negative… Your bike is as good as they can make it.