In this case the aliexpress implementation would have worked, but not in cases where the aircraft is literally pulverized on impact, like in the 737 MAX crashes of 2018 and 2019 (https://en.wikipedia.org/wiki/Ethiopian_Airlines_Flight_302 - "The aircraft impacted the ground at nearly 700 miles per hour (610 kn; 1,100 km/h) [...] Both the cockpit voice recorder and the flight data recorder were recovered from the crash site on 11 March.")

You've constructed a false dichotomy. You can have the current 2-hour system and a cheap 24-hour system at the same time.

Then you can gradually harden the new addon. This could be a way to make it all even more expensive.

Hardware is hard. There are so many more things that can go wrong.

If your cheap 24-hour system decides to self-immolate, it might be the cause of the incident rather than just help determine what the cause was.

You can make up 1000 different potential failure modes to try and make yourself feel smart.

And you can ignore those failure modes and kill hundreds of people at a time.

Did you conduct the extensive study into all the possible failure modes if we allow pilots to wear smart watches? Or cork-soled shoes?

It is appropriate to use caution and care. You are right about that. It is obstructionist to demand every possible mode of failure be used as an excuse to block progress. It is possible to use flaky hardware that will increase risk. But it isn't that hard or expensive to use reasonable care to avoid it while dramatically improving the tech. To pretend that any new tech would automatically lead to hundreds of deaths and should therefore never be considered is ridiculous on its face.

Airlines have dress codes for pilots.

“Reasonable care” is expensive for airline grade hardware. You don’t just add features because they sound good. You don’t throw tech at the wall and see what sticks. You engineer reasonable solutions to real problems.

It’s nothing like building a webpage.

I am fairly certain NTSB flight incident investigators understand fully well the safety implication of integrating an AliExpress recorder in the avionics suite of an aircraft. And wouod hence oppose such an idea quite strongly.