Sorry, the "farming" myth is one of my ocd triggers. DST is for golf courses and has never had anything to do with farming. Businesses want more daylight hours after office people get out of work to get those people to spend more money. This is the original trigger that caused the golf lobby to push congress to enact daylight savings.
The problem is the "consistent yardstick" actually. People are accustomed to start work at "8am", and react badly to being told to start work at "7am". So we change the clock so that their yardstick "8am" occurs at solar 7am and people get out of work earlier. And people now are like "lets keep summer time" which is the exact equivalent of "lets always go to work at solar 7am".