If Microsoft announces that this is going to be forcibly installed on all versions of Windows, then we can grab our pitchforks. Ideally this would end up being an opt-in feature. If it's an opt-out when they release, again, pitchforks.

Well, per Microsoft's website:

On devices that are not powered by a Snapdragon® X Series processor, installation of a Windows update will be required to run Recall.

So it sounds like everyone on Windows 11 will get it via Windows Update eventually