You don't understand. If Deino doesn't count any new J-20s, it means no new J-20s exist.
The craziest Chinese sources I've heard and read insist aggressively there are now at least 100 J-20s. I got into a verbal argument last week over this where I was suggesting around 30 to 50 and he was saying he's got good sources telling him there are 100 to 150 already and been in LRIP since 2017 but switched to mass production some time ago already. Needless to say, I'm confident this isn't the case and he's just listening to fanboys who talk with authority. But I know SDF and Deino's counts are conservative and more evidence based. The issue with this method is not all are photographed with numbers and location settled, obviously.
The Chinese sources say the numbers double up quite often and some say there are sometimes up to four identical units with the same visible number and they're further distinguished elsewhere in less obvious and photograph traceable ways. Interesting conversations nevertheless.