It never hurts to try. I myself have made some guides, organize giveaways, maintain an open corp (no requirement to join, no api check, no duties, no assets, etc.) that provides tax benefit and so on to aid the community and everyone who needs assistance, but it still is far from being as efficient as it could.
I have one alt for every NPC corp to promote this initiative and to reach as many players as I can but still haven’t got as much time to sign in to be as effective as I would want to.
All in all no effort is wasted but still I feel things could be more efficient. But by all means don’t be discouraged as the more people dedicate at least some time to such the more people will be reached and shown that they are not alone in EVE and can more easier learn the ropes of playing the game.
Btw if interested here you can read about my initiative: