I agree that the actual "setting up traps" is work, but so is choosing investments (even if that is usually shunted off to an index fund these days).

My gist was more that in both investing and trapping there is a point where the positions are set up and there just isn't anything that you can do to make the process go faster. Not being able to make it go faster by putting in additional work seems to be psychologically difficult to cope with for many people.