If you ever read ME in particular talking about a cartridge being “easy to load,” it has absolutely everything to do with ballistic performance, nothing to do with physical size or complexity in sourcing reloading components. If a small bullet with a short bearing surface is difficult to handle for square seating like 380 auto, then I’ll say seating is difficult. If making brass is a tedious process, like 7 Valkyrie, I’ll say making brass is burdensome. If components are readily available like 223rem, I’ll say components are readily available... But if you could drop 50 cases into a bowl full of powder, shake it all up, pull them out and seat bullets, then deliver 1/2moa groups with single digit SD’s, like 6 Dasher, then I’ll say the cartridge is easy to load for.