After marinating on many comments on "ETFs are just a custodial layer 2" my thinking on the semantics of L2s has changed. Language is fluid and anarchic. There are no rulers in language. Language is very much a social consensus. This is why communication falls apart when we can't agree on the meanings of words or at least understand what meanings others attach to words. My goal is to communicate effectively and learn from what others share. @Lux and @kr spurred new thoughts about how to classify the ETF in relation to bitcoin L2s.
My post yesterday was not about whether or not people should buy the ETF, is it good or bad, or are you dumb if you invest in one. It was about how to think about it in relation to other bitcoin related products, projects, and protocols.
ETFs are not new. There are ETFs for many assets. Lets think about Gold. Gold is physical. Unlike bitcoin you can't really have a second layer to gold in the way we have L2s for bitcoin. Lightning is connected to the main chain. Gold ETFs are an abstraction. They are paper agreements. You do not have physical control over the gold. You do however have a contract. ETFs allow people an easy and "legal" way to trade/speculate on something.
Bitcoin fixes this. You do not need to need to depend on authorities, law, or trust third parities. Acquiring, holding, and transacting bitcoin is not hard. However, it is different from what most people are familiar with.
Increasingly I think about bitcoin as a new element. A digital element that has utility and value. With that in mind, in a free society people will come up with all kinds of ways to interact with it. They will come up with scams, investment mechanisms, and products. Depending on your economic world view this is what the ETF is. It is the existing tradfi world adopting bitcoin. Clearly there is a market for the ETFs. But, none of this makes the ETFs a L2 like lightning. I now think referring to them as L2s muddies the waters and will lead to a lot of confusion.
I think @TheBTCManual said it best.
I like to think of it as a social layer, to me an uncle jim node is a social layer, you agree with a 3rd party and you have a contract and would need to go the legal route for disputes since don't have ties to the chain in some way to settle the dispute.