I mean its accurate insofar as "smart" is just casual-talk for automated-to-this-or-that-extent.
To my knowledge, Cardano just moved past their testnet phase of smart contract implementation, Alonzo, and has actually launched, or is at least in the process of launching, smart contracts on the mainnet/Cardano. I could be off though.
Running joke in r/crypto is that Cardano is perennially on the cusp of launching smart contracts.
Aside from that, pretty sure Algorand already has smart contracts, in addition to what seems to be a sophisticated PoS mechanism.
I've heard that Harmony does as well, but I know nothing about Harmony.
Also maybe Solana, seeing as Solana seems to be aiming to be a player in DeFi, which seems to be the biggest use case of smart contracts currently. Ethereum is still the goliath in DeFi, and that doesn't seem to be changing any time soon, especially as we get closer to PoS Ethereum.
The wikipedia page for Solidity, the smart contract programming language, says that it is compatible with Hedera Hashgraph, so perhaps Hedera has smart contracts as well.