Earlier quoted context omitted.
The push for shorter and shorter cert lifetimes is a really poor idea, and indicates that the people working on these initiatives have no idea how things are done in the wider world.
Which wider world? These changes are coming from the CAB forum, which includes basically every entity that ships a popular web browser and every entity that ships certificates trusted in those browsers. There are use cases for certificates that exist outside of that umbrella, but they are by definition niche.
Hardly 'by definition niche' IMHO.