My favorite thing with L2 is how you can call almost anything an L2 and people believe it. You can just tell them to use an independent proof of stake network with permissionless validators like Polygon (formerly Matic), and everyone believes this is the "trustless growing L2" while Binance Smart Chain - which is also an independent proof of stake network with permissionless validators - is the "centralized" one.
Polygon has a separate Plasma network which is not what anybody uses for all their smart contract redeployments.
The gulf of knowledge just gets wider and wider, and more and more profitable.