On: iPhones 'disabled' if Apple detects third-party re...

[izacus]

Yes, but instead of disabling authentication with the non-authenticated TouchID sensor it bricks the phone.

[Klathmon → izacus]

... until the old sensor is replaced.

Which is a good thing.

This is like complaining that forgetting your encryption password "bricks" your hard drive.

Yeah, apple deserves some flack for not making this known to 3rd party repair shops, but it's not a problem itself.