It's not mere semantics. Morning/pre-work daylight hours are useful to me, and I make use of them. I suspect that most people who argue for more evening daylight hours make little to no use of their pre-work hours, daylight or otherwise.I think you're making an argument of semantics. Fine. We can call it waking hours, though it is both. My waking hours don't really change according to the clock. I go to sleep about the same time on the clock whether we're in DST or ST. I want more time during daylight after work. Before work, it's not practical because I start work shortly after rising for the day, regardless of DST or ST. I usually wake between 6-7AM. Breakfast, 3 S's. I start working ~8AM, and stop working between 5-6PM. Having more hours in front of work doens't help me gain enough hours before work. And nothing is open that early anyway. When I get off at 5PM, I still have several hours I can get things done before sunset.
The point is still that zero people other than Lawyers, democrats, and blondes, think that DST increases the portion of daylight hours in a 24 hour period. And, one's circumstances drives the preference. Your preferences aren't convenient to me, and mine aren't convenient to you.