at last the interiors look modern and clean cut, no longer the old soviet style interiors where everything are exposed and ready to hit someone in the face
I'm seeing a wooden deck surface and thinking fire trap. I'm seeing benches on that deck that will, not can, but will, be sliding all over the place in any sort of weather. Where are the rotating chairs bolted to the deck? Not what one expects of a blue water navy.
The reason the USN and JMSDF have no decorative ceilings or paneling is their experience with damage control in WWII. Aside from it being a major fire threat, all of that decorative gingerbread must be chopped down with fire axes to gain control of any fire or to find the source of flooding. That material then clog the eductors of dewateringpumps. Japanese and American ships may be stark metal inside, with all manner of exposed wiring and pipes, but this is the lesson of WWII combat. No need to chop away at a false ceiling to dowse a fire on a wire run, or to find and plug a leaking pipe that is flooding a compartment. All damage is easily visible and readily accessed. There is minimal material to support a fire. Not pretty but it's a warship, not a cruise ship.