Steem is far more centralised than before.

There was never one witness group. There were 20 individuals as consensus witnesses and many more as backup witness.

Now, there are only 9 individuals in TOP 20 consensus. 8 people + Justin Sun.

Tell me, how exactly is that more decentralised?

It's pathetic how people are attacking the "old" witnesses, while in reality most of the problems came from the fact that Steemit Inc (incl. Ned Scott) didn't deliver, but continuously sold their ninja-mined stake, pushing down the price.