为什么说传统的跟踪方法可靠性降低？

Traditional tracking methods are becoming less reliable primarily due to increasing privacy regulations and technological changes. Regulations like GDPR and CCPA restrict how businesses can collect and use user data, making it harder to track users across different sites and devices. Simultaneously, technological shifts, such as browser updates (e.g., Apple's Intelligent Tracking Prevention in Safari and Google's phasing out of third-party cookies in Chrome), are actively limiting the functionality of third-party cookies, which are foundational to many traditional tracking systems. While ad blockers do reduce the effectiveness of some tracking, and conversion windows can vary, these are secondary factors compared to the fundamental shifts driven by privacy legislation and browser technology. Safari is actually reducing support for third-party cookies, not increasing it.