Most people following Instructables for tips on soldering wires to vector boards aren't likely to need to maintain their prototypes, and roughly 0% of those prototypes will be in a high-vibration environment.
I started out soldering but now it's mostly limited to installing connectors into PCBs followed by hot glue around the housing for mechanical rigidity
For wires like the ones in the video you can still use something like a small phoenix connector and just screw your wire connections in, just like you would wire up a choc box, no crimp tools required.
The advice in the post will likely create a cold joint and intermittent/noisy connections.
Anyone who has debugged one of them knows to do things properly or suffer the wrath of intermittent problems.