I'm not familiar with postmarket, but I imagine it shares a lot of the same phosh+GNOME app ecosystem, in which case, the apps aren't in a better state.
In terms of polish and app/dev ecosystem, I feel SailfishOS still rules, but it's getting harder to justify using/development, with it's increasing divergence from upstream.
In terms of polish and app/dev ecosystem, I feel SailfishOS still rules, but it's getting harder to justify using/development, with it's increasing divergence from upstream.