An end to the footnote?

Alexandra Horowitz wonders whether the e-book will kill it:

I have come across more than one author who chose “excrescence” to describe footnotes. Noël Coward reputedly said that “having to read a footnote resembles having to go downstairs to answer the door while in the midst of making love.” The footnote jousting could soon be moot, as the e-book may inadvertently be driving footnotes to extinction. The e-book hasn’t killed the book; instead, it’s killing the “page.” Today’s e-readers scroll text continuously, eliminating the single preformed page, along with any text defined by being on its bottom. A spokesman for the Kindle assured me that it is at the discretion of the publisher how to treat footnotes. Most are demoted to hyperlinked endnotes or, worst of all, unlinked endnotes that require scrolling through the e-reader to access. Few of these will be read, to be sure. 

Even a quick skim of Infinite Jest (as in, a quick skim of a few pages; I think that a 'quick' skim of the whole thing seems quite impossible) may reveal that David Foster Wallace would be very disappointed.