I find the quality of the explanations to often be poor, and it is not a good use of your time relative to the true gold-standard resources. Pathoma is so well-done that I think it is reasonable to watch videos to lay some foundation and gain familiarity with histopathology, but in general, watching videos is too passive. You will forget at least 50% of what you watch in a video after 2 weeks. The reinforcing questions help address this slightly, but still videos are an inferior way to study compared to other more active methods. Using the spaced repetition of Anki, doing practice questions, and other more active learning approaches (like making your own Anki cards) result in better long-term content retention. Watching videos can feel less painful and unpleasant, so it can be appropriate if you can't get yourself to study in more efficient ways, but most med students are sufficiently motivated if not already burnt out from other inefficient and ineffective study methods. BnB will not teach you to answer questions more strategically, and I have found that the limiting factor for many students is in the realm of test-taking skills, and these students are better off doing practice questions and critically reflecting on them to identify systematic patterns of test-taking error. This can be difficult to do on your own, but this more mindful approach, in my experience, is better than watching videos.
Mostly, I have worked with/supervised people who have worked with many people who have struggled and wasted time on B&B, and later succeeded with approaches that did not include B&B. In this way, my view on it is mostly empirical (I say empirical rather than anecdotal as it's a N of a few hundred students).
