Until the 1990's, JWs went to people's doorstep and sold magazines. Then the donation arrangement was introduced and JWs were encouraged to say the magazines were of "no charge", "but if you like to make a contribution to the world wide work" and thus solicit money, which went into an envelop that ultimately went to HQ. Of course, I could never bring myself to do this, but some JWs did follow through.
In effect, the "collection plate" is not passed at the Kingdom Hall, but has been passed from DOOR TO DOOR.
Which is better? A collection taken from fellow believers in the place where they gather to worship...or a collection taken from strangers who did not invite it?