Problem: Official maps have more online because they are Official. Official maps are the first impression a player gets about a game. Curated maps should be in first place because they are more detailed.
Suggestion: Remove the division of maps into Official and Curated. Make a division into Survival, Arena, etc. Add an option to sort maps by newness, popularity, and last update (newness by default).
Official maps are like a first contact for new players. They are designed to introduce the game mechanics and lore. Curated maps are for experienced players because new players may not understand game mechanics and will adept only to play on such maps. Some players may prefer the official maps for their design and OG style (including me who plays only vanilla). I also think that some curated maps are not really balanced for gameplay.
So, I think removing official map category is pointless.