The team was very likely to downgrade from 2022 at SS whether they signed Swanson or not, since a 6+ fwar campaign was very unlikely. Even the trio above Swanson is no guarantee to hit that high-water mark from Swanson (though they're much more likely to hit it than he is).
The hope is that Grissom + Arcía can contribute 2-3 fwar, that Albies can return to being a 3-4 fwar player, and that Acuña can return to 5+ fwar levels; add in the upgrade at C, and you see the outlines of a plan to be better in 2023 than 2022. I do agree, though, that something needs to be done about LF, with Conforto representing the most obvious angle at this point, and Brantley still being an option (even if his ability to play LF is pretty suss).