Review Asus TUF Gaming 550W Bronze Power Supply Review

Is the large amount of concern about capacitor quality still valid ?

Is there any evidence that Japanese caps are a lot better than Chinese brands in 2023 ?

Yes. They are still made of paste. Paste, barrier, and sealing are NOT the same. Compare a RMx or Seasonic which come with 10 year warranties. They are 100% Japanese capacitors. Kind of says a lot.