Oh yeah there a ton of 'make your own fun' sandbox guys. Helps to pass the time when all the missions are broken or whatever
Re Alec, you’ve made me think of this guy wanting to hike to a distant mountain, back when the forests were foresty…
But the game doesn’t always play nice
All that stuff like hooning & circumnavigating planets are possible in theory though sure. (Depending on the game’s mood. Desync was messing with hooners for a while, causing unavoidable crashes etc, and vehicles do tend to explode from mystery collision damage on longer jaunts. Hover bikes on shorter jaunts too

)
On object persistence, I don’t think it’s super extensive. Like the server will mothball ships after a while (people were storing dead bodies on their ships for a while, as that forestalled it…). And stuff happens like mother ships despawning when a launchable travels too far away.
But football goals should work, sure. Get a gravity gun, make your own fun