It doesn't share your FileVault key if you already have FileVault enabled.
Rather, if you install it on an unencrypted drive, it'll turn FileVault on and then save a backup of the key to iCloud.
Not sure if this is just a beta issue or it was intentional. It would be annoying for people who don't want encryption, but I guess for most people, an encrypted drive + iCloud key is probably better than an unencrypted drive.
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It doesn't share your FileVault key if you already have FileVault enabled.
Rather, if you install it on an unencrypted drive, it'll turn FileVault on and then save a backup of the key to iCloud.
Not sure if this is just a beta issue or it was intentional. It would be annoying for people who don't want encryption, but I guess for most people, an encrypted drive + iCloud key is probably better than an unencrypted drive.
It should prompt to give the user the choice not to while defaulting to a recommended setting of sharing.