Absolute bullpuckey. The site is updated as of last month.
SONY, since the 4x days (and especially during the 8x days), has used some of the best manufacturers for either re-branding or creating discs to their own specs with their own codes.
The Taiwan discs are not quite as good as the Japan ones, but that just goes back to the factory producing them. It’s really not an issue, the margin is small between the two.
If you have a bad experience with SONY on a regular basis, it’s likely a drive issue or firmware problem. But I have to say, SONY 16x still burn well even on drives where a default code is used (due to old firmware or poor firmware). Not many media can do that.