Part of the problem, I think, is overly simple examples. It's necessary to simplify in order to manage length and clarity, but when it comes to patterns, what I mostly see are examples that make it look like a lot of extra work for little or no gain. Web development tends towards the rapid development end of the spectrum, so it's difficult to grasp why we'd want to jump through all these hoops. It appears to be the sort of increased complexity that can help long-term maintainability if everyone involved understands it, but can harm it for someone new coming in, unfamiliar with the patterns in use.
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