I think that this is not true -- the achievements mentioned here are hardly ground breaking and mostly build on work that was already done years before LLMs were a thing.

There are things that the "open source movement" dreams about, and one just has to search around... E.g. like codecs, Qualcomm's aptX lossless, adaptative, and other more recent variations.

It's not new capabilities, it's new levels of access. Reverse engineering this stuff used to be a very tedious process which required a lot of specialised skill. Which is why most devices haven't been reverse engineered or hacked despite being full of low hanging fruit.