But isn't the calculator so good tho? Why get rid of it then? Just to be clear, I'm only questioning the logic and not you for posting it.

In the sense of this article that statement is really a contradiction.

Either the calculator is good and not scary and they would be embracing it, but they got rid of it together with the teachers that were implementing it on school.

Or the calculator is not good and they got rid of it and its teachers, while the newspaper reporting it says the school actually has no problems with calculators.

The humans in question weren't replaced with AI though, the company simply decided they didn't need AI.

While people losing their jobs isn't ideal and they can hopefully find another job, companies moving away from AI is in itself a positive move.