Thanks for reporting back! I postponed setting up my Pi5+Lexar to next year, but I will keep an eye on it and run some lengthy tests before final switching my current system over.
I’m back once again with a status update, possibly for the last time.
It has been four months since my last message, and I can say with certainty that there have been no issues whatsoever.
Both the number of operations and the overall load have increased, and everything is working as expected.
It seems the Lexar drive was the likely cause of the problem.