New research shows inequality will end humanity

I think he is just talking delusional shit as usual. Not sure we ought to be encouraging him. 

As for the relevance of communism to this country, there is none. There are hardly any communists here, and any there might be are hopeless nobodies wholly lacking in influence or power, except in our resident McCarthyite's  imagination.

He probably thinks we are communists, lol. If so this would highlight even more how clueless he is about what communism actually is. So I would suggest that rather than copying and pasting something found on google, he settles for merely reading it himself instead and educating himself. The rest of us already know what communism is. And have the good sense not to be communists.

What he has declined to spell out is what his own definition of communism actually is because it clearly differs from the real one.

On your first point  Marx is admitting here that communism is a kind of pantomime that's incapable of the kind of flexible, general purpose organisation that could allow industrialisation as an emergent feature . In the communist model, 'Industrialisation' would have to be identified as a thing we should do, a picture would have to exist of 'industrialised' as a final state, a,  planner would have to work out who needed to do what to get to that state and then orders would be issued to tell the people in their wigwams to stop knitting macrame and switch instead to smelting steel and building cell towers.

I think ithis betrays a kind 'final state' thinking - that the world is heading to 'finished state' in which all the substantial problems are solved. - that, when 'capitalism' (free exchange) solves all the problems, things will just flatl-ine into a state that can be 'managed' in the same way you would manage a warehouse or stock levels in a supermarket.

On your second point - When you say societies are becoming more 'socialistic', it's not entirely clear what you mean. You could be saying something that would include the notion that the US constitution is a socialistic document because it erased the legal distinctions of nobility and therefore made people 'more equal' in one sense. You could alternatively mean that governments are becoming more re-distributive in their approach. The latter observation, while true, comes with other observations - that the redistribution model looks increasing unsustainable, likely incompatible with democracy and appears to be accompanied by increasing inequality, rather than decreasing..I would make the prediction that, if western governments keep pursuing redistribution as a means to gain/take/maintain power, these societies are not going to transform into socialist paradises, but rather into third world tips run by warlords.

There is no 'what communism actually is'. Nobody has caught a live one in the wild. It's a bit like asking what heaven actually is. There is a definition and people have opinions on the topic, but that's about it.

It has striking similarities to many religions and perhaps even appeals to the same human needs

You're overthinking things. Just think of it as a society where there is increasing equality of rights.

It is very wrong to conflate the very different socialism and communism. The more demented and dishonest USA politicians do it regularly.