I can personally think of cases (not that PWAs have ever been anything but fragile when it comes to locally stored data), but as a user, the occasional clearing of super cookies is a bigger boon.

I don't disagree that local data for PWAs has always been fragile. I wished browsers were taking steps to make it less fragile, as opposed to more fragile. It would allow certain use cases to become valid for PWAs, thereby circumventing the need to create a 10mb native app for something that can be deployed much more easily and quickly with 30kb of Javascript.

Respectfully, I haven't visited an online SPA with under 100kb of Javascript in a very long time. Anytime I care to look, they are almost always in the 5mb range.

So, an offline app's size, when compared to just browsing the web, isn't a compelling difference (especially since it's downloaded maybe once a month or so).