The testing Pyramid makes sense. The problem for (perhaps) a lot of us will be that we're working on things where some or even all of the levels are missing and we have to try to bring them to a sensible state as fast as possible....but we have limited ability to do so. It's managing imperfection.

We're also possibly working with multiple teams on products that interact and it ends up being "nobody's job" to fill in the e2e layer for example.

Then when someone bites the bullet to get on with it....the whole thing isn't designed to be tested. e.g. how does anyone do testing with Auth0 as their auth mechanism? How do you even get a token to run an E2E type test? I have to screen scrape it which is awful.

Without those E2E tests - even just the test that you can login - the system can break and even when it's a test environment that makes the environment useless for other developers and gets in everyone's way. It becomes the victim's job to debug what change broke login and push the perpetrator to fix it. With automated e2e tests the deployment that broke something is easy to see and rollback before it does any damage.

I suppose I'm challenging the focus in a sense - I care about e2e more because some of those issues block teams from working. If you can't work because of some stupid e2e failure, you can't get fixes out for issues you found in the unit/integration tests.