The garbage part is that 9 of 10 (give or take) methods registered on https://www.w3.org/TR/did-spec-registries/#did-methods are from crypto-hyper-cosmos-nonsense.
The reason is that serious organizations like MasterCard or BankID will only begin considering registering a method once the spec is a W3C Recommendation. At this stage, only insignificantly small or heavily invested parties registered a method on a draft standard (which is what a "proposed recommendation" roughly means).
Edit: nope, I was wrong, Mastercard has one https://github.com/Mastercard/did-methods/blob/master/id.md