I think there is a thing about starting to boycott overly heavy websites.

There are some useful resources: https://greycoder.com/a-list-of-text-only-new-sites/

There are also some tricks to have a lighter web browsing by default:

- try websites with netsurf, links or w3m first

- using a local web to gemini proxy to browse many websites with a lightweight gemini browser.

And you can go a long way by using an adblocker and/or disabling javascript by default using an extension with a toggle.