There are services which will remove all but the text when browsing and make it greatly lighter.

20+ mb is the weight of all the javascript javascripting, ultimately to arrange and display an html page.

20+ mb is also the weight of rendering the HTML inside each client, instead of at the server. It is the weight of continuous disdain for users, and of 30 years of not giving a fuck about adding yet another abstraction layer and making it someone else's problem.