That Muslims tend to pick & choose what parts of their religion to follow at any given moment is not non-Muslims' fault and is not something we need to justify or defend in debates. You asked Ymir to produce a hadith or Quran verse which justifies Muslim destruction of idols; Ymir gave you one.
If you're confused as to why some Muslims seem to ignore ahadith at will then I suggest you examine your own tendency to do so in an attempt to gain insight as to why they might not have obeyed this particular hadith verse.
First the hadith isn't a verse, I think you're confusing the the quran which is the holy book
that we trust each word of it and the hadith which are the stories told by people such as
saying we heard the prophet saying so and so etc....
That being said, the evidence which we should follow is the material and the realistic one,
the idols in Egypt and other parts of the world that were under the Islamic empire are still
existing and hence the hadith is contradicting the living evidence which says that Muslims
didn't care about destroying the idols, so if you want to believe the hadith and not the evidence
then it's only due to your wishful thinking because of your hate to Islam and Muslims.