I agree as to the important strike role of GJ-21, but I think high op tempo operations conducted at such short ranges (076 only several dozen kms off shore) would be a poor use of GJ-21's characteristics imo.
I get the feeling that not only is 076 not a Taiwan oriented ship, I think that 076 having GJ-21 is not really useful in a "short range" (i.e.: under 100km distance) strike mission against a ground based target set, given GJ-21 has such a long range for its size and is so stealthy (if your target needs VLO to hit it then chances are you aren't going to park an amphibious strike group near the enemy).
If we think about the strike/fire support missions that GJ-21 can do off 076 which other organic naval or LHD assets cannot (including helicopters with ATGMs etc), it's basically relatively long range, high-likelihood-of-success, penetrating strike missions.
Look at the potential target set
For targets within the 1st Island Chain, these are all within range of the land-based version (GJ-11).
The advantage of a Type-076 potentially operating the GJ-21 at high tempo is negated by the risk of operating close to Japan or the Philippines, which is a dicey proposition. For the cost of a Type-076 and associated escorts, you could buy a lot more land-based GJ-21, which I reckon would provide far more strike capability, despite the additional flight time.
(Taiwan and Korea are so close to China that there's little to no advantage in operating from a Type-076 compared to a land base.
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That leaves targets beyond the 1IC, which means the bases in the 2IC and also aircraft carriers.
So as I said some years ago, I expect the amount of time that a Type-076 actually spends on amphibious operations to be limited because there won't be that many missions.
But since you have the Type-076 anyway, during the rest of the time, it specialises in ISR and strike missions beyond the 1IC. For at least the next 10 years, the US Navy will still be larger than the Chinese Navy, which matters in blue water battles.