As he points out, this would make your crypto the governments crypto, and soon enough every hacker worth his salt's crypto, because 'Not your keys, not your crypto', and this LEAD act creates a government database of keys to everybody's crypto wallets.
Does the U.S. government intend to own personal cryptocurrencies?
I don't know why cryptocurrency was created. Is cryptocurrency created to accumulate individuals' wealth?
Depending on how you define 'own', the answer to your question can be either yes or no. What the USG states it intends is to prevent anyone from communicating without it being able to understand that communication.
Again, depending on how you define the terms used, the answer is yes and no. The BTC white paper states the purpose of BTC is to enable individuals to escape the control of corrupt fiat economies. However, many have speculated that government agencies secretly created BTC in order to facilitate transitioning from fiat to DLT technology (blockchain based cryptocurrency) by extant financial power.
Given the current destruction of the economy being implemented by governments around the world, the latter explanation for BTC is more plausible to me. DLT clearly potentiates far greater power by institutions over individuals, and inciting adoption of BTC by people convinced that they are successfully opposing legacy banksters quite predictable when considering how to transition people from fiat to DLTs.