I've thought about this, tests should be easier to add to your modules. We dont' need a ton of tests, but we need them to be in more places.

Tests fix how the software can be changed and when software-spec evolves lots of tests can become obsolete. Maybe with AI it is easier to change the tests (?) which is good.

But there is another purpose for tests, besides "testing". It is to document your modules in a way that shows you how to use them, and let's you easily verify is this still working, can I trust it.