If it was a reason, it was certainly not the only reason as there were a variety of factors that made a German push for Paris unlikely.

Crown Prince Rupprecht requested and received three infantry and one cavalry division from the German right flank, which was supposed to assist in taking Paris. Moltke also sent two corps to Antwerp and one to Maubeuge, leaving the right flank with 12 corps rather than 17. With that in mind we can begin to see how a manpower shortage could become a very real issue, especially because the further down the German right flank you went, the further they had to march to keep pace with the units on their side.

The furthest unit was Kluck's First Army and the unit to its left was Bulows. On August 27th, Moltke reiterated that Kluck that was to march around Paris and proceed east, while Bulow besieged Paris. Unfortunatly, by this time Kluck's First Army was pulling too far ahead of Bulow's and the general in charge of Paris' defenses, General Joseph Gallieni, also was given command of the French Sixth Army, which he could use as a mobile defense force for Paris rather than just the Paris garrison force. This force will become important later. Aside from this, Joffre, the French general in overall command, had increased the amount of divisions facing the German right flank from seventeen and a half on August 23, to forty-one on September 6th.

At this point Moltke orders both Kluck and Bulow to halt their advances. Now Kluck attempted to close the distance between his army and Bulow's by moving southeast instead of halting all together and by doing this he opened up his flank to the French Sixth Army that was defending Paris but was still unknown to Kluck. Once the Sixth Army attacked, Kluck was forced to pull back to meet the force with his entire unit, leaving a 35 mile wide gap between himself and Bulow. While Kluck was fighting the French Sixth Army, the British Expeditionary Force march intowhat was now a 50 mile gap. Finally on September 9th, Kluck's army forced the French Sixth Army to retreat, leaving a siege of Paris open. Unfortunately Bulow had already issued his own retreat leaving Kluck alone, forcing him to retreat as well.

So it seems that there was no discussion in the German high command about the intricacies of how to besiege Paris as they never got to that point. It's been a long time since I've typed out a response such as this, so I will edit out any mistakes and any ugly formatting issues shortly.

Sources :

Capital Cities at War: Paris, London, Berlin by Jay Winter

The First Wold War by Hew Strachen