@lmedinar nah SSDs and modern systems are not vulnerable to hard reset to cause this kind of data corruption, that would only halt an ongoing data transfer that would most likely fixed itself once the system is turned on again.
I am 80% sure that this is an over-heating of the SSD (which is very common) as the technology is very reliable and robust, but the manufacturers are engineering it to fail after the warranty through e.g. using a special graphite mix thermal pad that deteriates over the time.
The solution at least on 2.5" is to open them and replace the thermal pad with a thermal paste.