Halt at al-Abtah is not the Sunnah. Messenger of Allah ﷺ halted there simply because it was easier for him to depart from there, when he left.
نُزُولُ الأَبْطَحِ لَيْسَ بِسُنَّةٍ إِنَّمَا نَزَلَهُ رَسُولُ اللَّهِ ﷺ لأَنَّهُ كَانَ أَسْمَحَ لِخُرُوجِهِ إِذَا خَرَجَ