Both of these seem like uncommon edge cases. I can't remember the last time I actually "saved a webpage" - I think in my using the web for nearly the past 30 years that functionality hardly ever worked well in the first place. I do use print-to-PDF fairly often, but honestly don't know how lazy load works in that scenario. If you choose to print all pages and it doesn't include lazy loaded images, I'd just consider that a bug.