X says its updated web app is way faster
I'm curious whether this is a true architectural rewrite or mostly tuning dressed up as one. Rolling out one country at a time suggests they're staging it carefully, probably to catch regressions before the whole user base hits the new code. That's the responsible way to ship a front-end overhaul, and it tells me the team expects some fallout.
The slow-connection framing is the smart angle. Most web app speed claims are benchmarked on fast hardware and fiber. If the new app genuinely performs on throttled connections, that's more meaningful than a synthetic Lighthouse score, because it speaks to real-world users in markets where mobile data is scarce or expensive.
Still, I'd want to see the numbers. X has a history of announcing big performance gains without publishing the before-and-after data. If the country-by-country rollout is about collecting real-world telemetry before a wider push, good. If it's just marketing theater, the enthusiasm fades.