No... the term DQ in the non/swimmer world typical stands for Dairy Queen, but not in our world. DQ is the dreaded term for some of you. It stands for : I just swam a race, it may have even been my best race, but it doesn't count at all because I messed up.
For a coach- or at least for me specifically, I welcome DQ's.
I have asked officials to write DQ's. As an official myself I have written a DQ slip even though I haven't wanted to.
Those yellow slips help notify a swimmer what they need to fix.
As a coach there has been plenty of times I have told little Tommy that his butterfly kick looks more like a breaststroke kick and have worked with little Tommy to fix it. However, little Tommy still does an illegal butterfly kick.
If officials let this go without writing a slip, little Tommy will not see anything wrong with how he does his butterfly.
See the link below: EVEN the big sharks get DQ slips from time to time. LEARN from your mistakes so that you don't REPEAT them. :)