To put it simply - The PLAN is facing different operational realities than the USN.
For the PLAN, they are mostly concerned with operations within and around the 2IC (i.e. her front-yard) for the foreseeable future. On the other hand, the USN is operating worldwide, meaning that their warships are often forward deployed farther from their homeland - And often times, within proximity of their adversaries' homelands/front-yards.
In order words - Until China is able to solidify her hold and presence along and around the 2IC, there actually aren't a lot of chances for the PLAN DDGs to mid-course IRBM and ICBM interceptions. And sailing their DDGs off the CONUS's western seaboard in order to be able to intercept ICBMs during the early mid-course phase certainly is a fool's errand, too.
Therefore, partially similar to what
@Cloud_Nine_ has mentioned - Instead of pure ASEV ships that the JMSDF is building right now to defend Japan against missile threats from North Korea and China, the PLAN would better off be procuring successor classes to the 055 DDGs as "true cruisers/CGs" (regardless of whether the PLAN still wants to refer them as DDGs), with greater focus in fleet-wide/region-wide defenses against anti-ship (and perhaps also land-attack) cruise missiles and hypersonic missiles.
TL; DR - The PLAN might as well go with actual CGs that are suited for high-intensity naval conflicts in the "true blue" Pacific, which are balanced in terms of both offense (anti-ship and land-attack with cruise and hypersonic/ballistic missiles) and defense (fleet/region-wide SAMs against the enemy's anti-ship/land-attack cruise and hypersonic/ballistic missiles), rather than having a mobile "offshored-AEGIS Ashore" platform.