> Would an ID with everything redacted but the picture and birthdate pass? It should be sufficient to fulfil the site's legal requirements
No, it would not. ”...the records shall also include a legible hard copy or legible digitally scanned or other electronic copy of a hard copy of the identification document examined and, if that document does not contain a recent and recognizable picture of the performer, a legible hard copy of a picture identification card.” 28 CFR 75.2(a)(1); and there's a lot more besides, see https://www.law.cornell.edu/cfr/text/28/75.2 and 28 CFR 75 generally, as well as 18 USC § 2257.
No, it would not. ”...the records shall also include a legible hard copy or legible digitally scanned or other electronic copy of a hard copy of the identification document examined and, if that document does not contain a recent and recognizable picture of the performer, a legible hard copy of a picture identification card.” 28 CFR 75.2(a)(1); and there's a lot more besides, see https://www.law.cornell.edu/cfr/text/28/75.2 and 28 CFR 75 generally, as well as 18 USC § 2257.