I have no idea, but the Google Blog is weirdly unoptimized for something so public-facing/PR related. Can't find the relevant HN thread, but somebody pointed out that on another Google Blog post, the author managed to upload something like a 4000x4000px image of himself that then got displayed as something like 80x80px.

When you open up chrome dev tools, the blog post is 19.2 mb (!). And they are all like that (e.g. https://www.blog.google/topics/arts-culture/just-flick-wand-... 92.2 mb).