No they are not, they are talking about batteries that contain a lot of lithium. Aside from battery nerds, the finer points of most chemistries are lost the vast majority of people and I doubt even experts would agree with your very narrow definition.

In any case, my point was that the car industry and the storage industry is dominated by a wide variety of batteries (most of them lithium based of course; some might say lithium ion even) that have way better longevity than the article suggests is the key selling point of this new battery chemistry.

I think it's a bit misleading or sloppy. I'd expect better from IEEE.

I've been guilty of thinking of lithium polymer. Most people have no idea of battery chemistry beyond thinking of the thing that comes with their phone.