True. Why anyone would play something they don't enjoy past 20 hours is beyond me though, let alone 10hr per day for 50 days. I clearly don't understand insanity development.
I disagree with this.
It is very, very easy to clock up 100's of hours in ED without having achieved much. 20 hours of ED can be easily clocked up just by supercruising around systems and jumping between systems alone. Supercruising around a system is probably the biggest time-consuming event in ED, and there is next to nothing to be gained from it other than "getting from where you are, to somewhere else".
An extreme example of "clocking up hours in ED without actually doing much" is travelling to Hutton Orbital.
Another example - any mission where you have to go looking for a mission-specific USS. You travel to the designated area, then you're simply flying around that area waiting for said USS to spawn - that could take seconds or it could take much, much longer. You're not doing much during that time either, but those minutes and hours are clocking up.
Scavenging on planet surfaces for materials is just one long "drive around until something spawns" - not really doing all that much, but it devours time.
Countless other examples of how the game is deliberately designed to clock up 100's of hours without anything actually being accomplished or much reward given for the time a player spends in the game.