I am by trade an electronic engineer. I did a 4 year apprenticeship at the Royal Aircraft establishment Farnborough. In all my time there I don't think I ever crimped a connection on any aircraft, it was always soldered and sleeved. Every cable was tied in to a loom, we spent months learning how to lace up a loom correctly. I would always solder and sleeve wherever possible, a decent sleeved joint is impervious to water ingress, a crimped connector is not. Either that or don't drive under water
