Cause Nukes are boring and pretty much a known and solved tech. All 3 nuke powers now have similar level ICBMs. The only drawback China has is in nuke numbers and SLBM range. If they can have a DF-41 range SLBM, that will be the big game changer. Otherwize, nothing interesting about ground launched ICBMs.
Even if China has 1000 Nuke ICBMs it will not change the power balance in the region. Cause Nukes are not going to be used. But Drones, fighter jets and other conventional weapons will change the balance of power in the region.
In the Nuke realm though, I would say HQ-29 is more interesting than all the nuke ICBMs. If China can develop a viable missile defense shield against ICBMs. That will be a huuuge game changer, much bigger than the 6th gen fighters.