Yes, using obsolete data from when tech was bleeding edge in 1999 to imply things about cost going forward is misleading.
On the other hand using improvement over the same timeline, drawing a line on a graph and saying "look how X Y is gonna be in Z years" is the same exact type of stupid but pointed in a different direction.
In 1991 lithium was highly immature technology and would take about a decade to make it into fragile electronics. It took another decade to make it into power tools. Now it's viable in high end commuter vehicles. If it was easy to predict the future a decade out with any reliability we wouldn't be having this discussion.
On the other hand using improvement over the same timeline, drawing a line on a graph and saying "look how X Y is gonna be in Z years" is the same exact type of stupid but pointed in a different direction.
In 1991 lithium was highly immature technology and would take about a decade to make it into fragile electronics. It took another decade to make it into power tools. Now it's viable in high end commuter vehicles. If it was easy to predict the future a decade out with any reliability we wouldn't be having this discussion.