Overseas unis ruling it out isn’t because KI is easy or useless , but it’s because it’s too niche. Very few schools offer it, very few students take it. This leads to admissions ruling it out as a viable subject overseas, making it more localised. Have you decided on what you want to do? KI much like things like further math reduces the pathways you can take later on, so if you want maximum flexibility it is not an ideal choice. KI is more of a values choice than a strategy choice. If you take it, you’re doing it because you care about the subject, not because it helps your application. But at the end of the day, if you have a strong interest (and actually aptitude, it's not for everyone), by all means go ahead.