Its true its aging but still works well for a small network. From what I gather in the forums, it might be due to the controller software not so much the specific hardware; the complaints still seem fairly steady.

For example the past year someone reported their printer used less than 30KB but was recorded as 1.6GB; another with a Cloud Gateway (not too old) reporting 17GB of traffic daily for a Kindle consuming less than 1MB

it's hard for me to understand how "pretty old" could excuse something as simple as not incrementing some 64 bit counters correctly.