Um, as a heavy skater, that is not only untrue, it is teaching your daughter dreadful attitudes towards overweight people (that they cannot do simple things).
I imagine it could also plant unhealthy ideas in her head... "If I get fat I can't skate anymore, so I better make very sure I don't get fat..."
Agree 1000%. My mom was constantly on me about my weight. She was constantly calling me fat. I was not fat. Now I am. She also made a point of calling out overweight people everywhere she saw them.