It's completely fair to single out OCZ as related to JMicron controller and sandforce controller issues. All of these controllers had a large set of options which could be tuned by manufacturer. OCZ was known for tuning for pure performance, disabling all reliability related functions in controllers whenever it could give them even a little bit of more performance on benchmarks.
As a result they typically crushed others on benchmarks but drives had absolutely atrocious reliability. Business model was apparently to sell as much as possible so that massive warranty claims could be accounted for through growth. This business model failed and they went bankrupt.