Indeed, that definition is included in the CCPA.
> (v) (1) “Personal information” means information that identifies, relates to, describes, is reasonably capable of being associated with, or could reasonably be linked, directly or indirectly, with a particular consumer or household. Personal information includes, but is not limited to, the following [...]:
> (E) Biometric information.
> (H) Audio, electronic, visual, thermal, olfactory, or similar information.
https://leginfo.legislature.ca.gov/faces/codes_displaySectio...
To your point, the intent would presumably still matter for exceptions to when deletion requests must be honored (say for journalism), but a photo of someone walking down a public street would still logically be considered the subject's personal information, by the above definition.