I agree with David. The title was misleading and I got upset before reading the article and got angry after reading the article, save 'holy moly guacamole'. 😛

That said, it does containt some useful information for people who are about to start using MERGE statement.

Back to the topic - This could be a very specific case for MERGE statement where one is not exactly merging the whole recordset but the subset of a recordset.