Well, nice try, but sadly maintaining up to date GIS data takes much more than a UI. The only thing that gets close to such datalake is perhaps OSM and ESRI World Atlas... but nothing is close to huggingface or github as positioning. Besides, data is a live thing, and all such cartography very quickly dates and gets irrelevant or incorrect.
Mapcomplete is literally an OSM editor though... xd
Looks like you missed that MapComplete is an alternative interface to view OSM data and contribute to it.
I can well see and disambiguate what it is and is not what QGIs aims to be. Nothing is close to QGIS in terms of features, it deploys 1gig of open tech. The only trouble is the design of the app haven’t changed much in 20 years, while data sizes did 10x at least on every level. It struggles to breath u der heavy load…