This is not about if people should be allowed to harm themselves though.
Legally, yes. Yes, everyone can do that.
The question though is if that is a good thing. Do we just want to look away when large orgs benefit from people not realizing that they're doing self-harm?
Do we want to ignore the larger societal implications of this?
If you want to delete your rootfs, be my guest.
I just won't be cheering for a corp that tells you that you're brilliant and absolutely right for doing so.
I believe it's a bad thing to frame this as a conflict between individual freedom and protecting the weak(est) parts of society. I don't think that anything good can come out of seeing the world that way.