If it is a progressive web app, then it should abide by progressive enhancement https://en.wikipedia.org/wiki/Progressive_enhancement https://en.wikipedia.org/w

If it is a progressive web app, then it should abide by progressive enhancement https://en.wikipedia.org/wiki/Progressive_enhancement https://en.wikipedia.org/wiki/Progressive_enhancement . So no, lack of push notifications are not holding back PWAs. They are holding back web developers which choose to aggressively require new features, then get upset when they only work in the browser they tested with (invariably Chrome).