Most of those SaaS have native mobile apps which track you, too. The runtime is not to blame. FOSS applications could be delivered with near-instant load times,

Most of those SaaS have native mobile apps which track you, too. The runtime is not to blame. FOSS applications could be delivered with near-instant load times, native feel and excellent sandboxing, with one universal build target. That is a remarkable ability. Do not let the crimes of Web 3.0 blind you to this. Tracking and disrespect for privacy are utterly orthogonal.