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slightlyoff@toot.cafe ("Alex Russell") wrote:

Frontend is failing. 75% of devices with browsers are smartphones, but not even half of sites pass Core Web Vitals on them. Why not? Too much JavaScript, added to indulge SPA fantasies the data is falsifying in real time:

https://infrequently.org/2025/11/performance-inequality-gap-2026/

A time series of single-core Geekbench 6 scores at 4 price-points: fastest iOS, fastest Android, mid-tier, and low-end. The wealth-based gap is growing.
Akamai's mPulse shows only 0.84 additional "soft" navigations for each "hard" navigation to load an SPA. This data is corroborated by an running Origin Trial from the Chrome team measuring soft navigations at scale.
Web-wide CWV pass rates for mobile and desktop. Over the past year, desktop CWV pass rates have been effectively static, while mobile has only increased 3%, remaining below 50%, up from 30% 5 years ago.