> it is Neuralink’s responsibility to say everything they do

When they bring a product to market, that is.

The presentation was in general about Neuralink. You had 1 question about security and the guy gave an 30s answer saying it is very important, they are doing it from ground up and try to bake in security from the beginning. He mentioned one example, of seperating BLE stack on a hardware level. Seems like a reasonable answer for a Q&A of this format.

Neuralink has actually no responsibility to tell you their whole security architecture. They are presenting this for recruiting and showing the public some of their progress.