I am all for cutting out the scams and clearing up the whole alt coin scene
and while China has implemented the regulation of ICO's and Japan also
what price do we all pay for that regulation?
I mean this whole thing is supposed to be unregulated and decentralised
are we moving away from that by following China's lead?
Actually Bitcoin regulation was attempted long before China. And yes, Bitcoin needs regulation too. That's what we have to start with.
If it's unregulated, it doesn't exist. That's one of the reasons the banks boycott Bitcoin (of course, there are many other reasons), that's one of the reasons most funds don't invest in cryptocoins, that's one of the reasons Bitcoin and then the alts are not mainstream yet.
And if China does something right, don't be afraid to follow, just because it's China. Of course, give it the best judgement about being right, because it doesn't happen that often

The decentralized utopia is nice. What's decentralized in crypto? The biggest miner is China because the power is cheap. Some coins are centralized from the beginning or have masternodes which are hosted in same and same datacenters. Not much else remains untouched...