The good part is that you shouldn't suddenly have your PC encrypted with a future update as a result of this change. From what we understand, this is a change that applies only to new installs, not existing ones. Even then, there are concerns about how users might handle the recovery key or lose access to their Microsoft account, as both things could prove fatal if you happen to have an encrypted PC.

While Windows 11's hardware requirements generally ensure compatibility with BitLocker, users who wish to disable automatic device encryption have a few options. For one, a registry modification during installation can prevent device encryption. Tools like Rufus can also create Windows 11 installation media that bypasses system requirements and disables BitLocker. However, we don't really recommend doing this unless your PC is really too old to handle encryption without a significant performance penalty. Keeping your PC encrypted can be vital to keep your PC and the contents of your hard drive safe from prying, unauthorized eyes. Make sure to keep that key safe, though.

Source: WindowsLatest