Has anyone noticed how appliances and even consumer electronics tend to lend themselves to having too many models?

I mean that it seems if I bought an LG 30" Range Model ABC in NYC and you bought one in LA, your model is ABC-D.

Manufacturers seem to be constantly changing parts, models, BOMs.

Is this because of just in time production? Different parts at difficult times means different variations?

It makes it IMPOSSIBLE to know which you'll get and which one is being reviewed online.