My dictionary gives pidgin and pigeon as alternative spellings; it suggests that its "business" re-pronounced in a Chinese accent.

There are two sets of issues in this thread, intertwined, but essentially different.

One is to do with the way language changes over time and place and situation, and what sort of changes and variations people accept and what sorts they see as damaging.

The other is to do with how people best learn, and how we can help people learn what they need to know, and how it is determined what are the things they need to know, in a changing world.