While I don't agree with many of the CPython devs ideas/decisions/crawling-pace-decision-making, I don't like the tone with which PyPy devs refer to them most of the time. It's like a rivalry which is ignored from the CPython side, even unacknowledged. And PyPy is not the Holy Grail of Python, it's just another implementation which runs into its own problems on some places[0], so it feels weird seeing them with kind of constant badgering of "the other guys".
The feature looks interesting, still if you don't like a particular feature/profiler/timer for Python, there's nothing stoping you from making your own[1], like kernprof which is amazing.
[0] for example, if you don't follow RPythons "way of doing things" you can end up with even slower performance than CPython -- I know because I've done it!