Most wires, conductors (e.g. solder pads) do actually emit electromagnetic radiation when operated on general signals. They are not perfectly designed radiators like patch antennae are, for example, but they do function like an antenna of sorts.
Based on a system's requirement of power, signal integrity, accuracy or perfection of operation and putting into perspective the kind of signals and their frequencies that would be traversing into or out of the solder pads, people may want to simulate the electromagnetic radiation characteristics of the pads using software and factor that into the calculations of the performance metrics of the system to try and understand its effects on the system and balance or mitigate that through other circuit elements, design techniques or by trying to change the pattern of soldering.