When it comes to complex flows with many branches serverless really shines. It makes it easier to manage such complexity. For simpler flows serverless might just be an overkill.
You know this is exactly how multi-billion companies are started. Such niches that seem so hyper focused that no one bothers to pay attention and before you know it. Boom! You are everywhere.
Actually age has little to do with this. If you join Tiktok you will see creators of all ages. Your zero desire is more of your personal taste, based on your individuality rather than your age.
I do not think they are the same. People addicted to social media can be locked in a room for a week, without social media, and show no adverse withdrawal symptoms. If you try the same to people addicted to drugs, they might die.
The engagement in Tiktok is part of what makes it addictive. You post a video and Tiktok gets it in front of people who will engage with it(in many different ways). Then your brain releases dopamine. And the cycle of continues.
Which makes me wonder, if someone created a wearable hardware device. Then, when you press a button it tells your brain to produce dopamine. Will this device be made illegal? Because that is exactly what cocaine does to your brain.
In short, there is a place for both.