All Macs can use LocalAuthentication to authenticate with an Apple Watch regardless of whether they have a secure enclave, and keychain items can be created with a SecAccessControl that requires the watch. So why does 1Password require the secure enclave?
1Password Version: 7.7.BETA-1 (70700001)
Extension Version: Not Provided
OS Version: macOS 10.15.5 (19F101)
Sync Type: Not Provided