Lunus covers the TL;DR in this quote "there is nothing remotely sane you can do in software to actually fix this." and gets down to ECC memory being the golden solution.
Security is all about increasing those difficulty thresholds, not absolutes.
TRR might better fit the description of a "golden solution" although it is still technically a mitigation. I would very much like to see more ECC in consumer/desktop systems.
Now with these public issues becoming more open, one can only hope that some consumer product moves to ECC and ends up driving ECC memory prices down in much the same way as mobile phones have driven many sensors and associated hardware down in price, thru volume.