Newcomers can currently find people to follow, but if their notes and replies are locked out of the web of trust because they have zero reputation, that's a problem. In most cases, hopefully they'll have a mutual follow from the friend who introduced them to nostr, but some people will come to it with no connections. They need to be able to buy their way in to a paid #newcomers channel (or whatever), or do POW on their key to get promoted as someone worth following.