Privacy Sandbox is still all about advertisement. While it is true that it is changing tracking on the Internet, if enabled in Chrome and used by sites, its main purpose is tracking and use for advertising, and not to improve user privacy while online.
more here
https://www.ghacks.net/2023/07/18/how-to-turn-off-google-chromes-built-in-advertising-features/
@Coctaanatis Tracking in disguise << The company decided to end support for third-party cookies in Google Chrome,
BUT
Third-party cooki tracking is replaced by a system built-into Google Chrome that Google calls euphemistically Privacy Sandbox. In fact, Privacy Sandbox is still all about advertisement. While it is true that it is changing tracking on the Internet, if enabled in Chrome and used by sites, its main purpose is tracking and use for advertising