That’s why this sort of thing is first used “for the children” (or “to prevent terrorism” back in 2001 or 2015[0]) - because when you argue in favor of privacy you then also implied to support whatever is being used as the impetus.

The alternative is to not start scanning your device in the first place and getting the foot in the door, because once it’s open it’s really hard to close.

[0] https://en.wikipedia.org/wiki/FBI–Apple_encryption_dispute