n essence the essence this is what the article says: JHJ believes that drama production environment in Korea is the best compared to other countries because even though everyone involved (cast and crew) in K-drama production is under tremendous pressure, they are still able to produce an output. (Sidenote: As to whether the output is high quality or low quality, you have to decide that for yourself. :D )
However, JHJ is not blind to the negative aspects of the live-shoot system, hence he wishes that drama production in SK would improve so that everyone, cast and crew alike, can work comfortably.
In short, JHJ is praising the people involved in K-drama production for being able to perform even under tremendous pressure, but he knows that the drama filming system in SK needs to change.