This is all good and well, but if we take a step back it pretty much means that anybody can get a DV certificate without any verification, which means CAs are useless, which means that DV certificate offer no more guarantees about anything than self-signed certificates.

Which is an excellent thing: maybe we'll finally be able to just use self-signed certificates ? And ask CAs for something where they actually can provide value, ie EV certificates, for as long as we're okay to stay with this model ?

This should be a call to browser vendors: when this is more widespread, accept self-signed certificates as if they were DV certificates !