Yeah because games like light of my life lacks depth and context.You're right about this part. Wrong about the rest.
Artemis has many supporting characters that give it depth and context. It's one of the things that make Artemis stand out from the run of the mill porn game. It's a mark of the effort that this dev is known for.
There are other VNs where seemingly only 5 or 6 people exist in the entire world. Some devs even just use manniquins instead of actually bothering with extras because half-ass solutions are easier than actually developing an environment. If that's the simplicity you're looking for, then there are plent of those to pick from. That's not Artemis though.
The dev could have achieved the same with half the characters, with the added bonus that the dev time would have been quicker.
Look at Corporate Culture for example, limited characters deep and engaging story with characters that are actually interesting.
But you do you. If you like it this way, good for you.