Blu-ray audio rates overkill?

[jeffm2016]

From a tech standpoint is the quality of a high end lossless audio on a good bluray overkill? Like if I have a decent full surround sound system like a def tech or klipsch decked out with all the speakers and killer receiver etc. would it fully use it all or would it give the same performance at half.

Im better with video technology than audio so im not qualified to figure this hypothetical out and just curious of how it fairs relativity compared to performance or where it could go if more was somehow possible.