Does Your Hot Solder Drool and Cover Your Copper Wires Like Hot Butter?

Because I solder a lot... and I have trained dozens of technicians how to solder, I'll chime in here. In the example photo, the wires seem clean enough. However, the user is not applying the tip of the soldering iron correctly. This is particularly important when soldering heavier gauge wire with a relatively low watt pencil iron.
You want to hold the tip of the iron more parallel to the joint, so there is a much greater area of the tip in contact with the wire you are trying to heat. The technique shown in the photo would take almost double the heat to get the wire hot enough. It's all about transferring the heat from the tip to the joint, and the more surface area that's in play, the better it works. It also helps to melt a little solder on the tip right next to where it's touching the wire. The liquified solder will help heat the rest of the joint, and the solder will flow easier. This is what my son refers to as an "old guy trick". LOL!