2daMoon
Mostly Harmless
Trying to turn this subtopic from (potentially) politics to its close argumentative brother, philosophy: Elon here may well be referring to the philosophy of "longtermism" (yes, really it's a thing). Very difficult to summarize but here is one in-depth description and take on the philosophy for those with such a bent and the attention span to read a few pages:
Longtermism essay
TL;DR Very hard to summarize without butchering. I'll just overview an upside and potential downside (as most philosophies have) from the essay. Apologies in advance for oversimplifying. Potential upside: we should strive for maximum spread+achievement of earth-based life over timescale of billions of years / lifetime of the universe. Potential downside: the ends justify the means, basically. Mass human suffering in the short term barely registers if it gets us to the long term / big scale.
Disclaimer: I found this essay useful. It associates Elon and some other big names and big money with this philosophy. I do not know Elon's personal philosophy at this moment in time, nor am I attempting to say that his possible attachment to this one is good or bad. I wrote this post to try to add some depth to the frequent snapshots of Elon's thinking that we often see here.
Longtermism (short-term pain for long-term gain) sounds very similar to HODLing, doesn't it?