you seem to forget the 2013 Berkeley->leveldb event involving the issues with the locks. that caused alot of drama, including a period of time exchanges halted deposits/withdrawals to avoid issues until the drama was over.
no i did not know that.
i did a quick research and it seems like what you are referring to was just a problem in
a bitcoin client called bitcoin-QT currently known as bitcoin-core. it had nothing to do with bitcoin or its blockchain.
what we are witnessing with ethereum and the bloat and the blockchain problems is a fundamental one.