More than anything, I think if there are two "camps" on Steemit, it's long term and short term.

If Steemit is "at risk," it is through the actions of short term thinkers who lose sight of the fact that their efforts to relentlessly maximize rewards on their next post may-- in fact-- contribute to the decline in the value of Steem (the token) as a result of which their original investment (which they are now delegating as SP) is going to slowly decline in value.

A little analysis might reveal that someone with 100K SP worth about $90K right now, might indeed gain $60-100 a day from delegating out their SP to some upvoting scheme... but if Steemit gains a reputation for being a "spam farm" and the value of Steem declines to 30 cents in a year... then that $90K investment is suddenly worth $30K... which is a MUCH bigger loss than a $60-100 a day income stream for a year.

But very few people think it through that far. Or they magically believe that nothing will happen if only they do what they are doing... except LOTS of people are doing it.