(w) Branded as easy to build on: "Unlike a blockchain like Ethereum, NEM doesn’t make use of a proprietary programming language like Solidity or Scilla."
(y) "The chain uses a reputation algorithm for peer-to-peer networks. Everyone on the network is assigned a global trust value based on certain parameters."
(z) "NEM is the LEGO of Blockchains
NEM’s modular Smart Asset system delivers the means for you to design to put almost any application onto a blockchain."
Neutral: "it is not a Turing complete, and the smart contracts are off-chain (which increases centralization)"
Cons: Update is delayed since 2017, hyperbolic blogposts from the team mixed with a lack of communication on updates, removal of technical info from their site
Overall, XEM/NEM might not be worth purchasing, but no reason to necessarily sell it off either. It has a place amongst other smart contract bets in a diversified portfolio.