How is OCD derogatory? It's just another way of saying anal-retentive in this context. I would argue that most of us here at Head-fi are at least that:
"In the psychology of Freud, the anal stage is said to follow the oral stage of infant/early-childhood development. This is a time when an infant's attention moves from oral stimulation to anal stimulation (usually the bowels but occasionally the bladder), usually synchronous with learning to control their excretory functions, a time of toilet training. Freud theorized that children who experience conflicts during this period of time may develop "anal" personality traits, namely those associated with a child's efforts at excretory control: orderliness, stubbornness, a compulsion for control,[1] as well as a generalized interest in collecting, possessing, and retaining objects.[2]
If these qualities continue into later life, the person is said to be "anal retentive"."