But they're not pdf/e-pub, they're live pages that support changing things in the DOM dynamically. I'm sorry, I'm not trying to be mean but people not wanting scripting on their sites are a niche inside a niche, so in terms of prioritising fixing things that's a very small audience with a very small ROI if done they might require a huge rewrite. It's just not financially feasible for not much of a reason other than puritan ones.