It has perfectly good utility, provided it works well.
It's just one of similar aircraft, potentially one of more capable among those (JAS-39CDE, JF-17 blk.3, Tejas mk.1a, F/A-50 blk.70, F-CK-1CD, Hurjet). As mentioned in a different topic, aircraft of this type could've been significant situational breakers in, say, Ukraine, which is highest tier battlefield in the world as of now. Simply because they easily provide sufficient capability @ mass - something all but maybe two largest modern air forces just struggle with.
It's in undesirable to generalize this way. It's different programs with different challenges.
China, despite J-20, is stuck with L-15 limbo. So is Russia, which failed i even forgot how many initial turbpoprop trainers.
Just b/c bright heads in both cases didn't derisk powerplants right until lightning struck. Or same bright heads in both countries failed CR929 largely b/c no one even considered that having RR engine as single option is not exactly a bright idea when you're developing something with Russia.