For me it looks more like decentralized proxy stuff. Tor exit nodes abuse is inevitable and their operators are vulnerable to government pressure.

Having incentives is good but I doubt it will make running nym exit relays (or whatever it is called) sustainable and worth the risk. However, I think nym incentive can be abused by malicious actors. I mean, hacked devices will be used for running nym. There are already proxy botnets, so this threat is not a theoretical risk IMO.