I don't see why any Non American would care about him tbh
It's like a non American caring about "should white people say the N word" debates in America
That's never gonna affect your personal life or your country so who cares
You are overlooking the context.
Because of Taco economic and foreign policy decisions, whole world was watching USA.
Media and content creators were feeding on Tariffs controversy.
Kirk Assassination happened in this background.
So, his death got more global coverage.
Then, viral left and right reactions further made everything intriguing for others - even those who didn't care started wondering who was kirk?
And, LGTBQ, women, abortion, migration, family values and so on - are topics which aren't limited to USA. Left and Right are ideologies across the world as well.
Infact, immigration is literally a global issue right now.
So, yeah...Kirk's stature got elevated more than it was supposed to at global stage.... thanks to reactions by the left and the right, and media feeding on it