Agree. I used a color e-ink to display my son's school timetable (previously discussed at https://news.ycombinator.com/item?id=42408546), and it has been running reliably for 18 months, with charging needed every 4-5 months. I note that the author (cool project!) also earlier took the route of displaying websites as PNGs.

I have one of these for this exact purpose and it's amazing, really underrated. Makes me want a bigger one for sure, though.