I realize that it's the British spelling, and in the past I always thought that was pretty cool. We speak the same language, and yet even with such close kin, there are unique cultural markers that define British from US culture.

What ticks me off is that because we have become such slaves to these machines, when some coder at [Apple/Microsoft/Google, etc] decides to choose one format over another, they affect the writing of everyone who uses their machine without taking the effort you describe. Most people don't care and just accept what the machine spits out. This simultaneously homogenizes away the cultural differences and makes people stupid because they no longer even understand the difference you just described. Instead, they will begin correcting people who do know the difference "because the machine says so."

I am similarly disgusted every time I receive marketing for "Grammarly" and other such homogenizing influences for writing. Our tech overlords are imposing their (usually remarkably flat and boring) thought processes on to the world around us through the medium of their machines.

I very much do not want the endpoint they are working so hard to achieve.