The article really blows, typical Pinkov. 800km is rather good for a combat radius actually, comparable to most aircraft right now.
SD-10 is the missile with the tested 70km range. The SD-10A might be equal to better.
He mentions the J-10A with the arresting hook. I remember that picture. It was a PS.
I believe most fighter/attack air craft are equipped with a arrestor hook for emergency use on air strips equipped with a arrestor system.
They are not capable of stopping the aircraft, but are used to bleed off speed if they are damaged.