Not a programmer, but this is good.
To go back to the joke: manual QA is infinitely more likely to find the exploding bathroom than a unit test would ;)
Automated testing is a fantastic tool, but manual QA is still very valuable.
I mean I wouldn't have minded if they wrote more automated tests themselves, but I'm also very aware that the mindset of me and developers would quickly become "it's not my responsibility to test my software".
Personally, I find it helpful to bugger out things with pen and paper before coding it out. This is helpful and useful.
Greatness to you of you need not the analogue. Others "below you" may and can do just as well. Please do not down your nose upon such folks.