Uhhh no, you did it because you got caught, and it was the only way you could quickly think of, to keep the customers and governments off your back. The lawsuits will still come, but this greatly reduced the calls to tar and feather everyone at Apple.
I don't think they were trying to sneak anything by their customers. The media just loves to paint it that way, and apparently you, too.
I think that someone on the engineering team led the changes and it wasn't discussed with the top-level executives. But the executives were left to respond to the realities of the situation afterwards. Can every change be micro-managed effectively? No. I truly believe that they had the best intentions, but it backfired as a media storm. Offering cheaper battery replacements was the right solution, and they should make the lower prices permanent, if you ask me. What better way to keep devices performing optimally over a longer term?