English is not universal, that's the main reasoning for that. You would be amazed during the decade of "Internationalization" it was the main talking points of every magazines and computer shows.
I think only because Excel is not, at its core, a programming tool.
For programming languages, English is universal. You are pretty much forced to learn English in order to take your first programming steps, and -- as a non-native speaker -- I find this is a good thing. This way, we have a lingua franca of programming.
It's not because of a particular love of English. It is what it is. I would have welcomed French or Italian or whatever had it been the lingua franca instead. I would probably NOT have welcomed Japanese or Chinese written with ideograms because those writing systems are completely extraneous and hard to match for my Western brain, but anything else is fair game.
