This is like concluding that Japanese food is terrible because the idea of eating raw fish grosses you out. (Also, it's "steak and kidney pie" as a unit, not a steak accompanied by a "kidney pie".)

Of course if you like something you like it. Just so happens that kidneys are not one of the most universally liked ingredients is all I’m saying

Sure but as I said, there’s nothing particularly British about using kidneys as ingredients. You wouldn’t conclude that French cuisine is unappetizing because some French dishes include them.

Yeah, but a kidney is a piss filter. Eat it raw or cook it how you like, but it's still a piss filter.

Sure, not everyone likes kidneys, but they're part of many cuisines. It's not like using kidneys in certain recipes is something unique to the UK.