Lovable is marketed to non developers, so their core users wouldn't understand a security flow if it flashed red. A lot of my non dev friends were posting their cool new apps they built on LinkedIn last year [0]. Several were made on lovable. It's not on their users to understand these flaws
The apps all look the same with a different color palette, and makes for an engaging AI post on LinkedIn. Now they are mostly abandoned, waiting for the subscription to expire... and their personal data to get exposed I guess
[0]: https://idiallo.com/blog/my-non-programmer-friends-built-app...
Developers with decades of experience still make basic security holes. The general public are screwed once they start hosting their own apps and serving on the Internet.