Is it worth noobs getting involved with this game now?

Still worth it but you'll probably have a lot of trouble playing against people who are smurfing. I'd advise you to play with friends who do play the game so they help you out and teach you things about the game. If you are going to play pick the champions that cost 450 Blue Essence since they are pretty easy and help you understand how AD and AP champions work, combos, their kit and things like that. Before playing the game go on youtube and watch a couple videos to understand what the game is about and what your goal is. I made the mistake of playing this game without watching anything and I did some really dumb shit. If you have any questions don't be afraid to quote me or PM me I'd be happy to help you out.