Apostate prophet scutinizes Quran; verse 33:53 obsolete nowadays?

In answer to the video "The Funniest Quran Verse (Crazy Quran Verses: 2)"

The prophet used to answer the call of freeman, slave, maid servant and destitute alike, shortening his prayer anytime someone would visit his open house so much so that his opponents spread it as a form of weakness and credulity while the prophet knew very well who to trust 9:61. They would literally reproach him of being "an ear" because of his empathy and readiness to patiently listen to what anyone had to say.

But although at first glance that seemingly gave the impression of being credulous it in fact reveals a great leadership quality of keeping cohesion within a group. He knows very well the liars or people with ill intentions but does not immediately expose them to the rest of the community so as to leave them the chance to reform themselves, as is commanded within the Quran itself. This passive attitude should however not leave any ambiguity as regards the prophet's intellectual and spiritual stance, as denoted in the rest of the verse.

Sometimes as reflected in 33:53, his leniency, kindness and forbearance to his folks would often lead to abuse. People would enter his house at anytime, preventing him and his wives from their spiritual duties and basic privacy requirements. This injunction taught them certain rules of behaviour bearing on the life of such particular society, based on a true feeling of brotherhood, mutual consideration, and respect for the sanctity of each other's personality and privacy.

This is the timeless lesson, applicable for all times, and which is now enshrined in the Quran through incidents that concerned the prophet. A report suggests that this verse was first revealed in the context of the prophet's marriage ceremony with Zaynab. Some of the guests stayed long after the event was over, in the prophet's home. The verse, according to the report from Anas came down some time after the incident, thus thwarting any attempt by modern critics to try and use the story as evidence of "convenient revelations". Besides, the ahadith speak of other occasion of revelation than this particular incident. This is due to the traditions and Quran commentaries, typically retrospectively applying events in the life of the prophet and the community as asbab alnuzul/occasions of revelation.

The Quran is full of such moral lessons, although illustrated through temporal situations, some of them related and others unrelated to the prophet. 

Here are a few other examples 

24:62-63"surely they who ask your permission are they who believe in Allah and His Apostle". 

In the prophet's time, the sincerity of a person's belief in God and the one representing His will on earth, was measured by their obedience to the prophet. None could dare claim to submit to Allah while rejecting the means by which He was actively communicating with the people. They could obviously not communicate with God directly and had thus to seek the messenger's guidance to know the divine will. This guidance from the messenger is still found both in the Quran and the sunna he left behind. The timeless application of the verse is thus in consulting both sources of guidance. See also 4:64.