I believe he's right to raise concerns, he is just failing to explain himself fully.
I found a resource for players to review to get an idea of what it is:
https://www.cryptonewsz.com/crypto-wallet/metamask-review/
In regards to POLYGON MATIC, who controls the user data/funds within this application?
I read in most instances the developer has control of all of this, this was the only red flag I could find as it was discussed that the developer could take everything.
As much as you understand Crypto currency, the mainstream knowledge of this subject is limited and jaded from a multitude of real life extreme case scenarios. So expect questions and comments in this vein - this is a mir forum after all.
I personally wouldn't engage in this system - do I have to in order to play?
I loved this feature on your old server too:
-Gain / Loss of EXP on PK
As with the previous server, when you Opt in to PK Status you will be able to steal EXP from your victim when you kill them. This will only work if both parties (Killer and Victim) have enabled the PK System. If 1 of the parties is not enabled, no EXP is loss or gained.
But I much preferred the full levels.