don't upgrade to Safari 14 if you use 'top sites'...

is the 'frequently visited sites' component of safari's new 'top sites' feature completely unconfigurable by users?... if you upgrade, safari picks -- apparently randomly -- sites you've visited at one time or another, doesn't include sites you've visited every day from the old 'top sites' display, and doesn't seem to be configurable by users... is this right?