First. Stop using the word "hate" unless you mean it. It's hyperbole and stupid.
Second, the answer is easy. Your section mates are going on rumour; what they "heard", not what they experienced. Their information is probably third-hand at the very best.
Third, (controversial statement alert)
- in some sax manufacturers' product lines, their black saxes likely are a bit darker sounding than their lacquered-finished saxes but for reasons other than the colour. Also,
- scratches and such wear look worse and show up quicker on black-finished saxes.
- they can cost more than other finishes in the same model types by the same manufacturers.
- they are much heavier because the black finish adds more weight than the lighter lacquer.
- - (OK sorry, couldn't resist. ;-)
It's likely that your section mates don't even know much of what is being posted above and are just blowing it out their *****. Don't pay them any attention.