Familiar interfaces borrow from well-established patterns. These should be used consistently within the interface to reinforce their meaning and purpose. This should be applied to functionality, behavior, editorial, and presentation. You should say the same things in the same way and users should be able to do the same things in the same way.

In general, I'm unpersuaded by these arguments (learning curve is determined not just by unfamiliar syntax, but by unfamiliar semantics and APIs as well, and the frameworks in question excel at adding complexity in those areas).