You can see in the photo you included that there are lots of reflective surfaces in the room. I have heard some of the Nimbus Prima Voce recordings, and the ones I heard sounded like they were playing in the next room. The recording procedure captures the room in which the gramophone is being played, and superimposes it on the room I'm listening in. Obviously listening on a headset would get around this to some extent. Far more detail will be recorded using a modern high-compliance cartridge with the appropriate stylus and reproducing electronics.
Audio reproduction is very subjective.
The quality of the perceived audio depends on the listener's belief in the methods used. I'm as guilty of this as anyone is. There are plenty of amature recordists who believe the only way to record is to place two mikes, ear-spaced apart in the best seat in the house. They shudder at all modern CDs and enjoy only their own recordings. If not, this may be of interest to you.