I agree with your synopsis.It seems HCW is far less interested in finding the user of the phone than he was when they first appealed. When the reports in 2020 surfaced many prompted the message that finding the caller was the key to this case & the only way to get it to a charging threshold. However, that no longer appears to be the case. Tourists pictures & videos are probably the most affective way of putting him near the OC that afternoon/evening. Judging by his rhetoric I think they’ve probably got that evidence now. My opinion.
TBH until the call
was mentioned in the documentary, I thought it had been resolved and they knew the caller's identity.
Seems not; and they don't seem to be too disturbed about it.
Probably they would still like to know but the investigation might have taken a different turn making it less important.
My opinion