But that's the thing these things lie in the hands of the individual! Only if you participate in the communities you care about, keep people from leaving the platform and keep encouraging them then you can make a difference :)
I wouldn't say that Steemit is immaturely dying, at least to me it just seems like the start. I'm pretty sure that this platform will be around for quite a while and it's only going to grow more, the more attention it (and it's communities) manages to attract.