Hehe , he´s a centralist , stop decentralisation , höhö ?

You have to play the cards you're dealt ;-). Even decentralized ecosystems still have top-tier players. See, The Rule of Three, for example. Jagdish Sheth makes this argument:

Competitive markets evolve in a predictable manner and, once mature, exhibit many similarities across industries and geographies. Most notably, each market tends to be dominated by three major, volume-driven firms, which we term “full-line generalists,” surrounded by a constellation of smaller margin-driven firms that are either product or market specialists. The three large firms together control approximately 70% to 90% of the market;

On this point,

Steemit was just the core and all around went to hive when Justin came , and since then , nothing occured but havin´ hive-images blocked , höhö .

I wouldn't say that nothing happened. Steemit has done some creative things with curation - and they replaced and surpassed the things that teams like @Curie had been doing. Curation is one of the blockchain's core differentiators from most other blockchains, so this is important.

But yeah, obviously we need maintenance and growth in other areas, too. And (IMO), that means someone has to organize the effort. There are only a couple plyers here with the level of influence that would be needed in order to do that organizing.