>>1
OOP is a software development methodology and a set of language constructs.
It does not consume memory by itself, unless you mean human brain memory which is required to remember the 80's era buzzwords.
>>7
A ``OOP Language" requires some relevant percentage more keyboard work than regular programming. Since the keyboard interface usually is the bottleneck. EXPERT PROGRAMMERS like Chuck Moore go into the opposite direction by restricting the Syntax to 6 colours omitting special characters.