People need to be able to receive constructive feedback and improve, without feeling attacked.

I did not detect snark, or superiority in this feedback comment. Instead, it seems to genuinely attempt to offer constructive feedback.

The parent pointed out a specific fragment that needs re-work, which is an actionable item for the OP. Perhaps it could have been framed more positively, but constructing a place where people cannot offer direct, actionable feedback is quite unhelpful for all involved.