It hasn't interfered with my browser top sites. I think the only purpose of the browser extension is to make sure Kagi is default search engine. I didn't really see any other functionality in the extension. Perhaps nostr:nprofile1qqsrgyzdaheuckfksqkgxz9r6qys72zh6j46f69hyzkv4a4j4vzfj6gprpmhxue69uhkv6tvw3jhytnwdaehgu3wwa5kuef0vn246z can weigh in on this?