On: I almost lost my hearing from the lid on the tank ...

[pbhjpbhj]

They're referring to the cistern AFAICT - so they mean that the water storage cistern has a ceramic lid, the lid of the toilet bowl is likely wood, resin, or such.

TBH I can't see why with a close coupled toilet anything other than the bowl needs to be heavy ceramic.

[kuschku → pbhjpbhj]

Oh, the cistern? those are usually enclosed in the wall here, entirely invisible, without any lid at all.

[astura → kuschku]

Then how do you do toilet maintenance?

[kuschku → astura]

you open the wall. You can remove the tiles from the drywall surrounding the cistern.