The bit about adblockers provides context on why this article is worth my attention. I'm not an extension developer, so "Extension Manifest V3 in Chrome Canary" means nothing to me.
But this:
>The most controversial aspect of the extension manifest v3 is the upcoming changes to the webRequest API. In v3, Google has changed the API so that extensions can only monitor browser connections, but not modify any of the content before it's displayed.
>Instead Google wants developers to use the declarativeNetRequest API, which has the browser, not the extension, strip content or resources from a visited web sites. This API, though, has a limit of 30,000 rules that can be created.
>Unfortunately, this change will break popular ad blockers such as uBlock Origin, which rely on the original functionality of the webRequest API and need more rules than are available in the declarativeNetRequest API.
Is very worrying. So thanks to the submitter.