As pointed out in that thread, "life support" has a double meaning
Life support e.g aboard a ship it is the combination of all systems responsible for maintaining a safe environment for the crew.
Life support e.g someone in bad/critical condition being kept alive through medical equipment.
OP does not realize the second meaning is just a huge self-own as it is an admission modern capitalism is only barely keeping everyone alive instead of creating wealth and prosperity for all.
It is even worse when you realize wait a minute that is actually a very good analogy, capitalism is definitely the only reason why we have billions of people that can barely afford to live and many more ultimately fail and the "life support" system just stops working for them i.e you end up homeless, get murdered, die of hunger etc...