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 I agree with this.  It is a major issue.

Bullishness is NOT warranted.  Bitcoin mining is centralized.  This is not even debatable. nostr:note1z58tmpfh7dahpfym99y4zkp6372tuhdsnwmn89xpxyt3dcq4kvxqp9jdq6 
 If the biggest miner went down, would it have a material effect on network security? 
 I don’t necessarily think it’s that simple.

4-5 entities control more than 80% of the hashrate.

This is a problem for many reasons. 
 Why is that? I'm curious. It's my thinking there willl always be one pool or entity that controls at least 1/3 of the hash rate. I also can't think why this would really be a problem.  
 How is this 'centralized' - ? https://buybitcoinworldwide.com/mining/by-country/ 
 Pools. 
 Matt, WGMI? 
 When bitcoiners start harassing every large pool and miner at meetups and on Twitter, maybe. Until then we’re just LARPing. 
 Is the main point of SV2 allowing hashers to create their own block templates?

Can you help me understand how SV2 helps to decentralize mining?  (Or link)

I have been worried about the centralization  of mining for a long time now.

I will do my part, but want to make sure we improve this. 
 Mining is fairly decentralized already, transaction selection (ie the thing that matters for censorship resistance) is not (because it’s controlled by the pools). Moving that task from pools to the miners would make bitcoin a lot more censorship resistant.

It’s not perfect, something like P2Pool/BraidPool may be better, but it’s 95% there and pretty achieveable, getting miners to move to something totally different is a big ask.