The soft screen has high contrast, good dark details, and good light control.
The hard screen has a wide viewing angle, low contrast, and inherently poor light control.
After entering the HDR era, high-end TVs are required to be bright and dark, and hard screens will naturally be defeated.
It is also related to the dynamic response time of the smear. The dynamic response time of IPS gaming monitors is indeed fast, but at the expense of image quality, the response time of graphics monitors with IPS hard screens is not fast.
A TV, like a graphics monitor, cannot sacrifice image quality for response time. Moreover, the dynamic response time of the VA soft screen specially customized for high-end TVs is relatively fast.
Therefore, high-end hard-screen TVs have no smear advantage over high-end soft-screen TVs.