I bought it about two weeks after it came out in July 2015, so I'm a bit biased at this point but yeah, I definitely think it's something to check out. If you have a controller, though keyboard/mouse is possible if you're dedicated enough.
Community is definitely active. Averages 35k players a month for the last 2 years on Steam. Not sure how console numbers look but I know the PS4 community has a massive community, as well. RL tracker shows ~400k active players between Steam, Xbox, PS4, and Switch as I'm typing this.
As for not hearing about it, idk really. NBC hosts and broadcasts the game on national television each summer, the major tournament (RLCS) prize pool just reached its peak, and as I mentioned it's held a steady playerbase after the initial Steam launch.