As in your computer could have hardware problems such as a partially faulty HDD because 99+% of people that use the wallet don't have the problems that you had.

The wallet does not get corrupted from a power outage. Only the blockchain data does which simply requires a resync.

There's nothing normal about your experience with it. There's been 100s of users without such problems. We've used the wallet for years without such problems. One way to cause a problem is if you get a power outage or if you shut down your computer without first properly shutting down your wallet. That would corrupt the blockchain data, in which case all you would have to do to recover from it in 99% of cases is to resync the blockchain from scratch, which the wallet would suggest you to do and a simple click + a long wait would get that done.

Also the Bitcoin 2 Core wallet is not meant to be a typical end user's wallet. It's a power user's wallet. Just like Bitcoin Core is not meant for most users. With that said, there are improvements coming, one of which is to make it more power outage/sudden shutdown proof.

Is it already fully synced again?

Yes, I let it sync. Then closed it. Then added my wallet data file. Opened it again. It synced, but no coins.

Maybe there is just a problem in the website , not so much update given in announcement  thread https://bitcointalk.org/index.php?topic=2251352.1000.

I also check them in coinmarcap  and here is only I found https://coinmarketcap.com/currencies/phantomx/. It's still alive but doesn't have volume  .

Reserved