You can bet though that Amphenol does sell a cable end preparation machine for these cables, which takes care of doing the work all for you, stripping the cable end, then cleaning off the outer to accept solder, and the inner to mate correctly. the hand method is for reword or repair, where you only have one or two per week to do, and thus can use hand tools, though I would say there are tools they sell for that as well. If you have ever used circular pin DIN military connectors, you get the hand tool to insert and extract with the service plug, but you can also have the manufacturer tools as well if you buy them, and also the proper crimp tools, or just solder them.
for these the press fit, with the connector body soldered on, is a lot more reliable, as the solder does provide a seal, and thus the contact will not degrade long term, even with vibration, unlike a solder joint.