Hyper-sensitivity a go-go

The grammar for today's 2nd grade lesson was "[blank] is as [blank] as." I had made an activity in which students measured each other's height and then wrote comparisons, as in "I am as tall as Chihiro," "Takahiro is taller than Ikuo" or whatever. My team-teaching partner approved this activity. I printed the worksheets.
Later, my colleague approached me to ask if we could change the activity a little. She was worried that my activity would upset the short kids. Would it be okay to change it to older/younger, rather than taller/shorter?
Well, sure, we can change it, if you don't mind wasting 50 sheets of paper for the sake of a minor change in the name of some imagined hypersensitivity. Goodness. Perhaps if my topic was actually controversial, like "I am as fanatical as" or "I am as much of an orphan as" but height? Goodness.
Perhaps I'm overanalysing the situation but... in case a student does have an issue about his height, should we (as teachers) not teach that physical qualities don't matter? Who cares if you're short? The message should be "no-one cares if you are shorter than everyone else," rather than "let's avoid discussing anything height-related when Kazuki's around."
Anyway. I was pissed at wasting so much paper, is all.