Crimping works really well when the parts are sized appropriately for each other (the correct size wire and matching-size terminal, for instance), AND when you

Crimping works really well when the parts are sized appropriately for each other (the correct size wire and matching-size terminal, for instance), AND when you have the exact correct crimp tool to do the crimping. Crimp tools can cost a small fortune, and are specific for the item they're crimping. You can't just use some generic crimp tool or pliers and get a good crimp connection. So in a factory setting with the correct parts and tools, crimps are actually superior. For prototypes or one-offs, soldering as you say is more likely to be reliable.