TON network indeed is pure hype, but new development is always welcomed in the industry. Much competition means every other chain will also have to stay active and know that they have a rival. Many layer 2 out there is not necessarily needed, but the developers still come up with it because they need to present something that can give them money. It's no longer about solving problems again; it's about presenting something you can convince the community that they need and make money out of them.
You are correct in theory, but wrong in practice. There is almost no competition at all. Most of layer 1 chains like TON do not do anything new or better. In fact they do many things worse than existing layer 1 chain. With their existence they are diluting the users and market and doing overall harm.
Toncoin (TON) is leveraging what they have, which I mean the Telegram community where they have 1B Monthly Active Users (MAU). So, for the marketing side, they don't have to be like other projects that spend more money, from this case study alone we can say that Toncoin (TON) is a hype project.
Without the Telegram user base TON is nothing. They should have never launched it.
About the L-2 projects, I agree with your points. They're not coming with innovation anymore, they're just looking to make easy money.
Neither are most L1 projects necessary.