A more accurate but less inspiring title would be:

RAM Has a Design Tradeoff from 1966. I made another one on top.

The first tradeoff, of 6x fewer transistors for some extra latency, is immensely beneficial. The second, of reducing some of that extra latency for extra copies of static data, is beneficial only to some extremely niche application. Still a very educational video about modern memory architecture.

[EDIT: accidental extra copy of this comment deleted]