It seems to me that the definition of OOP is so unclear as to make the term useless. It seems to me that lots of really bad ideas were spread under the guise of

It seems to me that the definition of OOP is so unclear as to make the term useless. It seems to me that lots of really bad ideas were spread under the guise of OOP. But now OOP advocates are shifting the definition so that OOP either excludes are doesn't explicitly advocate those bad ideas. I have to wonder: what exactly does OOP still advocate?