<blockquote>Why only 1 TBLS of soap?</blockquote> Because 1) he's goofy and 2) he apparently has no clue what happens to the washer with soap (vs. detergent) in hard water (although 1 tbsp is unlikely to be enough to cause soap scrud, just a bunch of laundry soil residue).
He also believes there are dryers that weigh the load to determine dryness (I found the video John mentioned above).