I thought about that before.
About the vibrations though, that’s not 100% true. It depends on if you deal with the vibrations or not. For example with my board, I use an acoustic dampening pad between my board and my casing. This reduces the vibrations to almost no vibrations on the electrical system. I did have that issue before on my first build. I would be riding and then, one of the power cables would fall out and the board would stop, lol. Even though I tape the out side of most connectors to prevent any chance of it slipping out. I didn’t tape or solder the motor plugs or the transmitter cable, and neither have ever slipped out due to vibrations on my current build.
So you can reduce vibrations to eliminate the issue of vibrations knocking cables loose on the system if you plan ahead, but since I’ve never seen anyone use acoustic dampening pads before to reduce vibrations, I would say your are correct in most cases.