Does The Sex Pistols' Wall Art Merit Historical Preservation Status?

In a world where Elton John has been knighted, shouldn't Johnny Rotten's art work be preserved?  London's thought leaders are now wrestling with this issue.  To quote the Express Newspaper;

"The controversial band was based at an apartment in central London in the late 1970s, and drawings on a wall were found when the building was recently converted into offices.

The images, mostly by frontman Johnny Rotten, include a self-portrait of the singer sporting his trademark spiky hair, and a drawing of the band's manager Malcolm McLaren clutching a bundle of cash.

Now leading archaeologists are debating whether the graffiti should be preserved as a work of historical importance."

Ed Glaeser has argued that historic preservation has gone too far in limiting "progress" and such artificial barriers to urban housing supply are a major cause of high real estate prices in such "progressive" areas.  Knowing how much Dr. Glaeser enjoys the sound of Johnny Rotten's band, I bet that Ed will reconsider his past work in light of the new news.