Its no different then when people had a shield macro to up survivability when being tunneled, then swap back to dual-wielding. It was a gimmick sure, but it was still used at high level pvp play for the stronger burst it did during ascendance. To say otherwise is disingenuous, whether it was intended by Blizzard or not.
Enhance in general has a history of gimmicky and unbalanced and unintended gameplay. In WotLK, there was the nightmare of dual-wielding spellpower weapons with double flametongue for obscene spellpower dmg that was unintended, yet severely outpaced AGI weapons until Blizzard "band-aid" fixed the spec. I myself was part of a server first Malygos kill where we eeked out more dps and healing by running an Enhance/Resto mutant spec (
https://wotlkdb.com/?talent#hZbxtcoxdIhuoRdVZVcxzhL) that ran librarian's paper cutter, double earthliving, and spammed chain heal on Maelstrom Weapons instead of a full extra healer. Also not intended. Heck, Enhance and Elemental could tank parts of ICC with enough defense gems...
All gimmick, but things people did, whether intended or not, that need to be considered when speaking about Enhancement.