the shidduch system failed them or yiddishkeit failed them?
Judaism is a religion, a belief system, an identity.
It also is a way of life, practices etc but that is widely different. The system didnt fail me And I didn't fail the system in terms of Judaism.
My belief system and practices may be called to doubt, but this is my journey and vastly more challenging than others. Most don't have to examine uncomfortable questions about Judaism, identity, relationship with god.
But yes, the shiduch system fails people like me.