touche. 
Pretty Funny.
Granted, there can be some gotchyas for less experienced users, but I don't think that it shouldn't be done because some users may initially struggle to use it.
Overall, IMO, it is still worth having a printf() method in the Print class since there is not much formatting capability, particularly for field widths, in what Arduino.cc originally and still provides in their Print class.
It isn't like it replaces the original simpler Print class output functions.
History is showing that pretty much all the 3rd party developers share this same mindset as they have added it to their platform cores.
And after-all, it is well known and documentation on the formatting strings is literally everywhere since it has been around for over 50 years now.
--- bill