Workaround To: Default webloc files won't open with default Browser (Ventura 13.1)
After you set your default browser in Settings, Desktop & Doc, Start using Apples' Stickies application. They appear as a type of post-it note on your desktop. In one of those, create links by copying the URL of your frequently accessed websites, and pasting them into a Sticky Note, one on each line. After that, you can highlight each of those urls and choose 'Make Link'. Then, all these newly created links will now open with whatever default browser you selected in Settings, Desktop & Doc with one simple click.
Again, this is just a temporary workaround until Apple (Hopefully) fixes the default browser with webloc file issue.
Happy Holidays!
MacBook Pro 15″