Probably because of generally unfavourable feedback from owners of VW models that had were fitted with steering wheels with haptic sensors (https://www.caranddriver.com/news/a4175 ... s-changed/#). The haptic sensors have also been slated by some journalists in motoring reviews; maybe unfairly, as some owners seem to like them - quite a few owners on the mk8 Golf R forum seem to.
There have also been many instances where steering wheels with haptic sensors have needed to be replaced under warranty because of the generation of false error messages associated with sensors within the steering wheel rim. Quite a few owners on Golf forums have had replacement steering wheels - only a few owners on this forum that I can recall have had a replacement. Those steering wheels are expensive to replace and it’s been a worldwide problem, so the associated warranty costs are likely to have been significant for VW.