It's about time this became a public discussion. Websites have become so horribly bloated, while most discussions seem to revolve around whether ads are acceptable or not.
Android P uses 10x as much memory as it did from Gingerbread, I don't feel as if there's 10x as many features.
In this case, the largest resources are Javascript and CSS (yes 1.2MB CSS files!). The weird thing is that it appears to be making requests with different cache-busting strings and getting resources that are the same size.
(32MB now, I haven't done anything on it since starting this post)
The new gmail is the slowest web app I have ever used. It's gotten so bad I've started managing my email on my relatively snappy inbox iOS client.
It wouldn't be so bad if they didn't load so much crap, like the gchat functionality nobody has used since 2008.