That doesn't fix anything, the reason DST exists is because at higher latitudes, the sun rises too early in the summer, and too late in the winter. DST exists to make the time of sunrise more consistent across seasons. DST only functions if hours are shifted seasonally, once for summer, and again for winter.

Have a look at a sun graph to understand why https://www.timeanddate.com/sun/usa/seattle

What? It fixes everything! It means you never have to change times again. That singular benefit overrides anything else. what's wrong for summer is right for winter, and vice versa, but if it's equally bad it's also equally good.