I'd say "why not wait?". Minor, non-urgent patches will definitely go nowhere for a long time, so it gains nobody to submit now.
Submitting patches during freeze has been discouraged for many years, so asking a long term contributor to avoid sending multiple minor patches is in line with that.
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Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services