AMO does not require a manual review nor the extension to be uploaded publicly. You can sign it through their site and then distribute it elsewhere.
Also, I don't see how you can compare browser extensions to vscode extensions. One product is aimed at your grandma, the other at software developers and doesn't have access to your email, banking and credit cards.
Also, I don't see how you can compare browser extensions to vscode extensions. One product is aimed at your grandma, the other at software developers and doesn't have access to your email, banking and credit cards.