Is the embedded proof validator too strict on proof arrays vs singular object?

[dbluhm]

The VCDM 2.0 specification says the following in the proofs section (emphasis added):

The proof property within a Verifiable Credential is a named graph. If present, its value MUST be either a single object, or an unordered set of objects, expressed using the properties below: ...

https://www.w3.org/TR/vc-data-integrity/#proofs

The schema for proofs requires the proof property to be an array:

...
      "proof" : {
        "type" : "array",
        "items" : {
          "$ref" : "#/$defs/Proof"
        }
      },
...

Should the embedded proof validator permit either a single object in addition to an array of proofs?