It's not exactly rejected by the community - apart from a few vocal critics, I think most people are comfortable with it, and a lot of code does now support it.

It's not exactly rejected by the community - apart from a few vocal critics, I think most people are comfortable with it, and a lot of code does now support it. It's just a slow movement, because there's a lot of legacy code out there. Also, many features up to 3.2 were backported to 2.7, so there was little incentive to make the switch. That's starting to change with 3.3.