Including talking crap about Chinese HMS? Some even get along and gives him a like as if it real gold...Throwing out tangential argument without attacking the merits of it does no service to any pro-china message you are trying to give.
His insight on JF-17 may not be as valid as a Chinese engineer involved with the program, but it as valid as any Chinese member on PDF.
If I don't clarify it, many will take his words for real.
You shall know who is the chief designer and designation company for JF-17 ,right?