Not sure why the snark. I think it's a fair question. Since you take issue with the phrasing, I'll enlarge it to "development & management of IE up to 2006."
They did give it regular updates throughout that period; those updates just never targeted web standards. I'm honestly wondering whether that was through explicit desire (it's a valid business strategy), willful misdirection (not prioritizing "the web"), or management incompetence (inability to deliver desired standards compliance). I've never read / heard anything definitive to explain which of those happened.
There was never any team tasked with working on Trident after IE6 shipped till IE7 work restarted; as far as I'm aware, it was always the case that the IE shell was developed relatively separately to Trident, so those who did do all the work (esp. for later XP SPs) probably scarcely had any knowledge of the Trident codebase to really start trying to fix bugs.
They did give it regular updates throughout that period; those updates just never targeted web standards. I'm honestly wondering whether that was through explicit desire (it's a valid business strategy), willful misdirection (not prioritizing "the web"), or management incompetence (inability to deliver desired standards compliance). I've never read / heard anything definitive to explain which of those happened.