Yes, I don't think that Bitcoin's blockchain is compatible with MetaMask EVM (Ethereum Virtual Machine).
Perhaps this is just a mistake, maybe what they meant is Wrapped BTC or WBTC. And any case, this just shows how poor crypto journalism is.
Bitcoin blockchain is Proof of Work, not EVM with smart contracts. Bitcoin blockchain can not interact with EVMs.
However, if it is about wallet, if they use same BIP, they can use same word list for wallet seed and a wallet can serve for both Bitcoin and altcoin storage with same wallet seed.
You can get example with Trust wallet.
However, even if you use Metamask to store Bitcoin and altcoins, you must have different wallets for different storage purpose. One wallet for Bitcoin storage and another wallet for altcoin storage.