Two things:

APA put out years ago, "Junior Manning is a pilot IQ test."

and

After 30 years, I don't need an ignore button to ignore a FA. I fly with mostly the same group, so there are FA's I respect, listen to, take advice from on occasion and FA's that walk onto my aircraft that I don't hear a word they say.

Now that may be bad in an emergency, but, in my experience, those FA's I push the mental "ignore" button on, usually create emergencies.

Coming into DEN, early, we were, of course, advised we would have to wait 30 minutes for a gate. Below sterile, the "B" FA calls and says, "We have a woman vomiting blood." I call Company and viola, we have a gate.

In the "good old days" you could listen to the conversation between FA's. The "A" called the "B" and asked what was up? The "B" said a woman is vomiting blood. The "A" FA asked, "Is that the one that drank so much red wine?"

I kept that conversation to myself and we got in 30 early - with a gate. The "B" went on my "ignore" list.