That’s incorrect - check the hardware IDs, they’re different. If it’s the same model they’ll have the same hardware ID.
Your linked thread is also from three years ago - that’s a long time in the Linux world where things change quickly. I could just as easily dig up a thread about x not working on pretty much any topic, so it’s not really evidence of anything.
Edit: I just checked the Gitlab releases page for libfprint. Not only have they added more devices (that aren’t listed on the page that I linked previously), it also proves that support for many new devices have been added over the last three years. So claiming that nothing has changed in these past three years, is being disingenuous towards the good efforts made by these devs.