[mellosouls]

There are various techniques automated agents (eg crawlers like Google's) can use. Ethical ones are done in agreement or following the guidance of the content providers to allow discovery which suits both parties while not giving unrestricted access which wouldn't always suit the provider.

We could hypothesize that in this case BWB is employing some of those techniques while it isn't a discovery-enabling service, but rather a content-using one, and so would be expected to present as an ordinary user and be subject to the same constraints.