I've got this problem when teaching people things. When I need to explain a single feature, I feel it helps to give historical context for why things are the way they are, but it's hard to concisely give just the relevant context in that case - because there's just so much of it. Getting the whole picture in one go might be a lot better.

(Interestingly, the historical context could also pre-empt much of the criticism of "the modern web", or lamenting about not every browser building on Chromium.)