I really don't get this argument. You could write the exact same thing about our desktop computers, containing bank logins and all kinds of private documents and pictures.
Are you seriously arguing that our computing devices should be locked down by their manufacturers because bad things can happen if you have freedom to use them any way you want?
I'm quite disturbed that such a position goes unchallenged on Slashdot nowadays.

Don't beat yourself up, it's not a bad first guess to assume any particular piece of software has already been ingested into systemd until it's been demonstrated otherwise.

If not it's probably just a matter of time anyway.

And don't forget that one either.