Fair point, it didn't feel like you were in agreement.
Apple has to classify their apps. Do they even have a game engine classification? I'm assuming they cannot class it as a productivity suite...
As for random people on Reddit. We've gone and hopefully can move on from the hive mind of regurgitating opinions and use our brains a little more. We're not hunting karma and upvotes here, we're here for better discussion.
Basically, you're saying because an engine also has a packaging element (contentDB is the packaging and distribution part maintained by 1 developer, it cannot be an engine). It is both.
"Minetest is an open source voxel game engine with easy modding and game creation". https://github.com/minetest/minetest
Historically, when you install windows, it comes with a game. Does that make it not an operating system?
I'm more inclined to believe the team who make it rather than some random internet stranger though.