Do you find that the lack of a browser extension makes it easier to get phished by failing to accurately read the URL? That's one of the stronger arguments I've heard for a browser autofill feature
I tend to navigate by URL or browser history, so I just don't enter phishing URLs.
An extension could save my ass in the scenario where a legit site (e.g. a shop) has been compromised and the redirect to payment services has been replaced with a malicious site, but I don't believe that's very common?