In my opinion this likely a systemic problem.
Software engineers are not typically recognized for fixing bugs. Engineers get promoted for implementing something new and making some noise. I'm sure with the company doing well the driver team has better resources than before. But look what happened after GCN was retired? Tons of new features with the overall quality taking a nosedive. Everyone wants get seen doing something cool so they get promoted. Once they do, it's better to leave so they don't need to fix the bugs on the said cool thing. Sadly it's a systemic thing in the industry. Many tech companies do this. They just don't reward the act of bug fixing enough.