Generally his technical information is actually very good and why I read it, but much of what he talks about is speculation.
ie you will find he mentions past history of a certain practise... like IR and SARH missiles used together in Soviet and Russian aircraft and then talks about IR and ARH models of R-77, without any other proof of their existence.
Certainly they used the IR seeker from the R-73 in the R-27T and R-27ET, and it would be logical if they produce a lock on after launch IIR seeker that fitting it to the R-77 and R-77M as well as their very long range missiles would make a lot of sense, but there is no evidence they are doing this... or course there is no evidence they aren't... the first news about passive radar homing versions of their AAMs that could home down the pencil beam of a enemies fighter radar... for instance for a Sparrow to have any chance of a kill then the launch aircraft (say F-15) needs a lock on the target before launch and all the flight time of the missile to impact... an R-27EP could use its much greater launch range than any model Sparrow, and also much higher average flight speed to hit the F-15 before the Sparrow hits its target... and do it totally passively. The first news about such a missile was revealed well after it was in operational service (ie 20 years after).
Here is as good as any place to start http://www.ausairpower.net/rus-weps.html