I think you're exaggerating a bit. I'm a fan of Server Push myself, but Server Push won't make your site 30% faster, or slower without it. Early hints are not and cannot replace server push, as they are only hints. Nothing is actually subpoenaed. Hints only indicate that certain sources should be loaded with priority, again they should be prioritized. Whether the browser ultimately does this is up to the browser. You will therefore have to look for another way, or consider where you can save amounts of data, because only that will actually bring anything.