It is well worth reading.
Sontaku journalism is the kind of journalism that proactively ingratiates itself to power players and governments. North American journalism has practice this kind of journalism in many ways: Harvey Weinstein did not get away with as much as he did, for example, without the press giving him fawning coverage.
Any time the press lavishes praise on someone in power, it is a form of sontaku journalism.
The Japan Times is questioning it, and acknowledging it exists, not making excuses for it. Had the North American press done the same, we'd still have a viable profession.