Being on DT2 shouldn't mean that user can be trusted with money.
This is horrible advice. Being in the DefaultTrust network means you will influence others as to if certain members can be trusted with money, including sockpuppets that may or may not be public.
If you are in the Default Trust network, your "sponsor" should be able to trust you with an absolute minimum of 6 figures (USD) at the drop of a hat, however $1-2 million would be much more ideal.
I think he probably means that merely being on DefaultTrust doesn't magically give them a gold seal that they are trusted to hold x amount of money. Once you get added to DT 1 or 2 this isn't a guarantee by theymos or anyone else that they're trusted to hold massive amounts of money but more that they've been trusted to be a valid member of the trust network for whatever reason. I personally don't think there would be many DT members that I would trust with millions of dollars and at the end of the day most people here are just a username on a screen and the ratings you've left and activity amongst the community should be taken into consideration more than how much money you have handled.