There are only 3 points made in the entire article. All of them can be easily refuted.
1. LCA can fly for 59 mins while Grippen can fly for 3 hours.
Ans: That is impossible since BOTH the aircrafts have the SAME internal Fuel capacity i.e. ~3000 Liters AND have the same engine.
2. LCA needs 20 hrs maintenance vs 6 hrs for Grippen.
Ans: Maintenance hours put in is a function of the confidence of the pilots in the fighter plane. An entirely new genus of aircraft necessarily results naturally in greater wariness of the pilots and their requirement that even the minutest doubts they may have be addressed.
It has NOTHING to do with the reliability of the Aircraft.
3. HAL has not been able to meet production target.
Ans: This is the only part that is true, which is why HAL has taken 2 important steps to address it.
i.) Start a SECOND production line
ii.) Outsource major sub-assemblies, including front fuselage, centre fuselage, rear fuselage and wings, to private industry.