That's understandable though I imagine it's unlikely we'll see something like that ever again, right? To me it seems kinda like how race car engineers used to be able to discover some major advancement in their engines that would give them wins for a few years but nowadays it's much more homogenous and worked upon for much less significant gain. I don't know much about the deeper webdev stuff though so who knows, but it seems like that could only ever really possible with a shift in a browser trying some novel shift in architecture.