Based on the comments in the thread, I sense I will be in the minority, but for most consumers this is a reasonable default. Broadly speaking, the threat model most users are concerned with doesn't account for their government. The previous default is no encryption at rest, which doesn't protect from the most common threats, like theft or tampering. With BitLocker on, a new risk for users is created: loss of access to their data because they don't have their recovery key. You are never forced to keep your recovery keys in Microsoft's servers and it's not a default for corporate users.

I'll always remember - when I was first learning about it, one of the interesting counter-arguments to ignoring privacy was "what if the Nazis come back, would you want them to have your data?". I suppose there's some debate these days, but hostile governments seem a lot closer than they were 10-15 years ago.

Will this make people care? Probably not, but you never know.