How to pay BTC on a Coinbase Commerce checkout?

I can see how to pay with almost any ETH/EVM combo, but it's not obvious how to spend BTC, DOGE, or LTC. Only options seem to be link to CB-Wallet, Rabby-Wallet, and Metamask-Wallet.

Do you have to link to your Coinbase exchange account to pay LTC / BTC / DOGE on CB-Commerce? Seems silly.