Steem has been the TOP 3 ranked cryptocurrency at one point. Clearly, Steem should be very well known by now. And I would even argue that most people heard about it. (at least those that were around in that timeframe)

That is not an inflation problem but a marketing one. That has nothing to do with the inflation rate.

You want to point to that as one of the causes, I think it means little. Perhaps the slow sign up time, Whales acting like children, and a distribution that man consider unfair has more to do with it.

So even if I would think STEEM could go higher, the risk is far bigger to invest in STEEM than in BTC.

Risk is something that certainly investors look at. In fact, it is a more crucial level than the inflation rate.

Of course this is all off topic:

Answer me two thingL

A) Do you think that an inflation rate of 2% would have STEEM in the top 10?
B) Why are you concerned with it?