Yes, you are correct as we add layers we decrease decentralization AND security on those other layers to INCREASE scale/speed.

Applications like Fediment are creating solutions to these problems. The #Bitcoin maxis don't think anything without your OWN private keys on the base layer are secure. And they have a good point. Scale and applications will be needed and ALL your Crypto real-world applications will eventually be L2+ Bitcoin.

Go back to the base layer. We need a NO HEAD decentralized base layer. Like Gold has been for 1000's of years. Yes, Gold became corrupt because as a base layer it became CENTRALIZED. That simply can't/won't happen with Bitcoin as LONG as SATs are used and electronically tied to the base layer (no CEO for Bitcoin). Watch mining and Nodes.

Will people get scammed on L2+? Maybe/Probably at some point in the future. Humans cheat. This is why Bitcoin will reprice everything over the next few decades and regardless of what you do with XRP or anything else, Bitcoin will determine its value.

Yada, yada, yada on Shitcoins 'fixing' BTC. BTC does not need to be fixed, it's doing EXACTLY what it was designed to do. Your base premise is just wrong and you will figure that out over time.
#Bitcoin