Sorry, but this is completely wrong!
1. The J-15A earns the bad nickname because a few stupid reports from Hong Kong, Taiwan and the typical suspects in the USA fabricated stupid stories with even more stupid claims, that are in fact plain wrong (see point 2)!
2. ... making it dangerous to land on carrier led to few fatal crashes. Exactly one of these lies. NO J-15 so far crashed during carrier approach on the carrier. At least from what is known there was only one fatal crash - on 27 April 2016, when one J-15 fighter (allegedly no. 117) crashed due to problems in the flight control system during (a malfunction in the horizontal stabilizer) during simulated carrier landings (at Huangdicun). The pilot Zhang Chao became famous since even if he ejected at last moment, he later died of the injuries sustained. Lesser known is a second aircraft (eventually no. 114) that was eventually lost on 6 April 2016. Here indeed some say it crashed into the sea, but not on landing. And the third - in fact again not a crash - occurred on 17 August 2017, when pilot Yuan Wei flew with his no. 104 into a flock of birds right after the plane had taken off and he managed to make an emergency landing. In the end, the pilot was rescued, the fire quickly extinguished, but eventually the J-15 a write-off. As such, your claim of several fatal crashes is plain wrong!
3. This is why there's no more J-15A being built: Again plain wrong. It is well known, that after the first two batches of altogether 24 J-15s there were 20 more in Batch 03 built between early/mid 2020 to early/mid 2021 and currently Batch 04 is being delivered to the PLAN NA. In parallel the next batch of the improved - and see my Tweet from yesterday - J-15T (catapult capable) is being built. So again your claim of no more J-15As are being built is wrong again.
4. ... leaving no fighter on Type002 Shandong class aircraft carrier. And finally this too is wrong since there are in fact additional J-15s - altogether there are already more new-built one than have been built within the original batches - and a second permanent carrier-based unit is being established at Lingshui exactly for the Shandong.
So again, please check what you post