Complaint to a local newspaper

He honestly believes that the pyramids have no architectural merit?

But a WalMart does?

Now that's scary!  And incredibly hard to believe.

He's probably hoping that Walmart will do a booming business in selling sun block and bad hats to the tourists.  And little hammers for the tourists who want to chip off a piece of the pyramids to take home.  And zip-loc plastic bags to carry the chips in.  The really lazy tourists can buy their archaeology chips in the special, air conditioned "selling our patrimony" department of the store.  When the tourists have chipped the pyramids away, then they can use the land to build condos and time shares that look like Teotihuacan.  In the aerial photo I can see perfect locations for the Pool and tennis courts. 

All you'll need then is an onsite MacDonalds and an ice cream/coffe shop at the top of the largest pyramid.

Have you forwarded his comments to the Ministry of Culture or whoever it is that is responsible for protecting and maintaining the site?  I'm sure that both they and UNESCO would be interested to know that the site that they have worked so hard to protect has no architectural merit.

Someone should also perhaps point out to him (politely of course) that while controversy does sell newspapers, stupidity doesn't.

I read in our local paper that the Wal-Mart there had opened despite the sizeable protests.