PS+ will be required for online play with the PS4. But, I agree with you. M$ made the big announcement to test the waters and see how bad the response would be. Even though they've reversed the policies, the damage is done. It's not good for consumer trust to propose anti-consumer policies, and then flip-flop when there's vocal opposition.
The fact that they are able to change it so easily makes me think they knew they knew it wouldn't fly. All their arrogant talk about connected experiences, and "buy a 360 if you don't have internet," didn't help either.