Razor, you are right that we all have different ideas on what works. Round my way biting on an unexpected cardamon pod, is par for the course. It usually just bring smiles all round, as it is carefully placed on the edge of the plate. I don't know anyone who eats them, or indeed would raise a concern that they nearly had. They are just accepted.
To use a golfing comparison, they're a bit like a bunker, that should be avoided, but you'd miss if they weren't there!!!
Ok how about this thought. Is their inclusion regional? Now this leads us on to what traits a regional BIR have? What are the obvious difference of a London BIR, to a Scottish one? Could the UK be divided into identifiable BIR zones? An example is that on some of the videos I've seen Jalfrezi cooked with 2 ladles of gravy. In South London, its often a low on gravy, but high on oil.
So here's the thing. We maybe comparing nationwide recipes, with regional benchmarks of end result. No wonder what works for one, may not for another. Is this getting too deep?