He claims that not all bc1 wallets will work with the Lightning Network.
Only P2WPKH wallets will work, i.e. multi-sig.
2FA and other P2WSHs will not work.
You made a little typo here, but it changed what I said

.
Here's the corrected text:
He claims that not all bc1 wallets will work with the Lightning Network.
Only P2WPKH wallets will work. It means that bc1 multi-sig, 2FA and other P2WSHs will not work.