Several times I've considered other browsers, but Vanadium has advantages I'm reluctant to forego.
I hated not being able to import and export bookmarks, but there have been alternatives since the days of del.icio.us. I currently use an online TiddlyWiki based on curated-links.tiddlyhost.com . Lack of support for webauthn is another annoyance, but that's still new technology and I can wait.