You may disagree but a lot of folks see them different now.
This is exactly what the problem is. No matter how you want to portray it, the term "scrub" was designed to be a derogatory term for a specific set of people. When you turn it into something to label a variety of people, including those that did nothing to deserve anyone's contempt, then you start to look kind of ignorant in the eyes of others.
Gandhi does not deserve to be called a scrub. Nobody here can say for sure what his thought process was during that match.
If anything, the scenario could be that he did those moves because they worked. There is PLENTY of rhyme and reasoning behind that.
But to imply that someone is doing things without rhyme or reason is like saying that they put a blindfold on and randomly pressed buttons. That is just dumb.
It sounds like what you really mean is that scrub = someone that is bad at the game and has no knowledge of move properties or mechanics.
You also don't need to ask "What kind of scrub is he?" because it's understood through context. Many words out there are like that.
Yeah, I take back that statement. Was dumb of me.