Because Seven Red's reversal from favourable to unfavourable is so widely cited, it is frequently the star introductory accounts of Xuan Kong flying star practice reach for first when explaining why the system is organised around twenty year periods rather than treating each star's meaning as fixed for all time. The same underlying logic, that a star's influence peaks during its own ruling period and fades or curdles afterward, applies to every numbered star, but Seven Red's swing is unusually stark, from a period read as prosperous to a long stretch read as actively dangerous, which is what makes it the example most often reached for.
Contemporary practitioners consulting a chart today, well outside Period 7, generally treat an afflicted Seven Red position with the same category of metal-draining or fire-based remedy used for other difficult stars, while also flagging it specifically for physical security concerns, locks, lighting and similar precautions, rather than only the more abstract cautions applied to stars like Two Black or Three Jade.
Sources Chinese Mathematical Astrology: Reaching Out to the StarsHo Peng Yoke with The Living Earth Manual of Feng-Shui: Chinese GeomancyStephen Skinner