Now, to answer the original post...
No, that is not the intended purpose of a Traffic net. The original purpose of Traffic nets was to send messages on behalf of 3rd parties (ie "free" Radiograms) in part as practice for emergency situations, in part as practice for potential call-up by the military.
This was highly relevant in the 1940's through 1970's. A lot has changed since then... Internet, e-mail, cell phones, texting... all have conspired to, as an unintended consequence, to remove the bulk of the need for Traffic Nets. We've gone from the era where a Western Union Telegram was a rare & expensive thing, thus making the appearance of a "free" ARRL Radiogram something special... to an era where the only reason someone even remembers what a Telegram was, is courtesy of an old movie... or the Candygram scene with Mongo in Blazing Saddles.
To say nothing of the fact that emergency communications for disasters is now handled in a formal, bureaucratic, structured way, as mandated by your local, state, or federal Emergency Response organizations... and we don't fit in with most of those that well anymore. Or that the military no longer feels the need for having a pool of experienced, self-trained hams available to call up if needed in time of war.
Many Traffic nets have cut back (some used to have 2 or 3 sessions a day) or outright folded. The ARRL NTS is withering on the vine, so to speak.
The days where a ham club or group of hams could set up at, say, a county fair or other event, and offer to send "FREE RADIOGRAMS" around the country? Gone. You will never again see a 2 week onslaught of traffic from the Florida State Fair, coutersy of W3CUL & W3VR. Who wants to bother, when they can not only text their friends & family from their smart phones, but send pictures to? And speaking of those two Silent Keys, I doubt few even recognize or remember these days their unique signature... 161 Al & Mae.
And on top of all that, often when a piece of traffic IS sent out, it is undeliverable... no one is left in the recipient city to get it and deliver it, or they don't want to bother looking up a phone number, or the information is outdated and can't be delivered. Worse, on the rare (these days) occassion of a VALID piece of traffic... there are a few self-appointed heroes, who love delivering traffic (and do so poorly, to boot), to the point where they short-circuit the NTS system. IE, they intercept traffic meant for out-of-their-area, starving the local traffic nets, simply for the "glory" of being the "hero" delivering the message. If only they learned to identify themselves, ennunciate, speak slowly enough to be understood, or even ask if there is a reply; no, they're too busy delivering messages (poorly) to bother with any of the fine details.
Is it any wonder that traffic nets have little traffic these days? The real wonder is that so many of them still hang on by a thread.