味噌も糞も一緒
Meanings
1
lumping good and bad together; treating everything as the same
Idiomatic expression used when someone fails to distinguish between what is good and what is bad, often in a critical or exasperated tone. Literally 'miso and shit are the same'.
See also: 味噌
He lumped the good and bad together and rejected all the proposals.
It's not good to criticize everything without distinguishing between good and bad.