I think it is not the original figure from the paper but a sketch adapted for general audience? The publishers are now starting to ask scientists to engage audience by "simplified" plots/sketches and keep detailed accurate plots for close community.
In fact simplified plots are not new, but rather a common ignorance. On the flip side the "close community" frequently demonstrates their own conceit in their diagrams by frequently failing to go just a small distance more to label their axis. /RANT