Some time back project announcements were usually made by high ranked members because it was perceived they were more trust worthy and things went on smoothly but with time you expect change and now this is possible with any account(copper member for lowest rank) and issues of trust are all a matter of how good a project is and not the announcer.
It is never good to naively believe that projects opened by high ranked users are good ones. It is main reasons why people (scammers) tend to buy high ranked accounts to make OPs of their projects. At the ends, those projects run by bought accounts mostly end as dead ones. It might be not exactly 100 percent, but most of them end as scam projects. Moreover, Copper Member accounts do not equal more reliable ones.