"might be overkill"
but I'm not surprised to hear that you haven't had failures
I don't think I would have the patience to do that many steps.
While I do not in any way disagree with Maine or the dog, I do mine differently. Been doing it the same way for a long time, and have never ever had any connections fail. I use a crimp connector, using a non ratcheting tool. One of the cheapos from the box stores. For a reason. This leaves a slight gap at the wire end of the crimp. I then solder the crimp connection, apply a light coating of 5200, and heat shrink over that. Heat from the center out, forcing the 5200 out the ends of the heat shrink. Then apply a coating of liquid tape over that. May be the wrong way to do it, and might be overkill, but it works for me.