This looks like an actual log-log plot, but of new cases vs existing cases. Not a super useful view except to point out that yes, growth rate tends to be proportional to infection count (pure exponential growth) until something majorly changes.
A linear plot would tell exactly the same story, just be compressed too far towards the origin to be very readable.
A linear plot would tell exactly the same story, just be compressed too far towards the origin to be very readable.