This is a cheap way to try to subvert legitimate criticism by trying to shame others into not voicing their criticisms, and is exactly the opposite of what HN is intended for.
Why bother discussing impossibilities? Might as well criticize it for not being powered by a miniature fusion reactor since that has about the same chances of happening in the short term as a third party Apple compatible fingerprint sensor.
If you want to pile onto Apple instead of the hardware maker, that is valid criticism.
Tacking on emotional manipulation does not somehow make your point (more) valid.
> Not having a fingerprint sensor was not a design choice by the keyboard maker. It is a constraint of the operating system that peripheral makers have no ability to work around.
What? Numerous other sibling posts have pointed out that this is not only possible, but it's already been done. Claiming it's "a constraint of the operating system" is false.
If you read the details of your own link, what they are doing is taking an official Apple keyboard and physically attaching the Touch ID to a third party keyboard. It isn’t getting Touch ID to work with third party hardware. It’s just putting Apple hardware in a different housing.
It’s like claiming that putting a Mac mini inside a Dell case means that a Dell can now dual boot MacOS. Putting two things adjacent to each other does not make them the same thing.