Is fx-portal still a valid approach for token bridging?

[ianhe8x]

From token mapper, it says fx-portal was discontinued. What's the reason for that?
Even without the UI, I assume this approach still works since the contracts still there. But I wonder is it safe to continue using this for erc20 bridging?

Is the reason somehow related to polygon 2.0 that POS chain will be migrate to a zkEVM validium, so the state sync may not continue to work?

[saez0pub]

For the next who search like me the contracts on amoy : https://github.com/maticnetwork/static/blob/master/network/testnet/amoy/index.json