EDIT: Okay, it was a bit silly of me to drag my heels in, I don't strictly hate it and there are good things about British cooking (mostly veggies), but I find the meme's meat obsession super silly. I am having stomach pains and cramped arteries just looking at this stuff.
Highly underrated
I love how it's superimposed on the diapers lmao, I hope the meme was ironic
well with shepherds pie you can certainly add a lot of flavoring and spices (spice the meat/filling, season the vegetables, season the potato). its just that british people don't really know how to use spices when their dishes absolutely could use them.
The flavour primarily comes from the herbs and stock the meat is cooked in, but everyone has a "secret ingredient" of either mustard, worcestershire sauce, or marmite to enhance the flavours.
I lived in Edinburgh for 2 years and heavily oppose the "anything" part of that. I've seen chip shop horrors you can only imagine. Deep fried haggis pizza doesn't even begin to plumb the depths of things that can and have been battered.