Is a 4K dash cam actually worth it over 2K/1440p?

Specialist forum threads (dashcamtalk.com) repeatedly flag that many '4K' dash cams interpolate or run at lower frame rates in 4K mode, so the practical gain over a true 1440p STARVIS 2 sensor is small. Reviewers we read suggest a well-implemented 2K/1440p camera with HDR often produces sharper plate captures than a nominal 4K camera, especially at night.