Maybe, but it's probably the size of momentjs for Temporal and likely still not quite right. It's also not fun at all to have to target a bunch of fills/shims for a specific browser subset, though if you're targeting mobile, you kind of have to target Safari.
Not as bad as IE of old, but still seems to similarly be the odd one out always lagging half a year or more behind.
perhaps don't be hard on them, Chrome released this to stable 2 months ago.