@bramus This only works if you are 100% sure your site needs one dark and one light theme, not more, ever.
Honestly I'd stick to the old way, as adding more themes will be more maintainable. But ofc it depends on your needs!
my sister, who doesn't work in tech, thought it was pretty cool that our team sets aside time to tell each other jokes and thats when i realized she had no idea what i was saying when i told her i had "standup" everyday