> I don't understand what the article is about.

The article is pretty clear. She was using Mail app for rss feeds and the upgrade seemed to totally delete her rss feeds and her subscriptions. Mail app upgrade should have checked if the user has subscribed to RSS, and could have exported the feeds and subscriptions. The least the upgrade could have done to notify the user to manually export the feeds and subscriptions before going through the upgrade.

> Is she trolling for page views?

Trolling isn't defined as whatever you disagree with.

> Don't people make backups anymore?

Take backup of what? Taking a disk backup would have given her the proprietary on-disk blob which only Mail app could read, and now the Mail app refuses to do so.