https://developers.redhat.com/blog/2019/07/08/10-tips-for-reviewing-code-you-dont-like#
Code review strategies
Here are several strategies to keep in mind when reviewing submissions that, for whatever reason, you (as a project maintainer) do not like:
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Rephrase your objection as a question
Bad: "This change will make XXX impossible." (This is hyperbole; is it really impossible?) Good: "How can we do XXX with your change?"