There’s a difference between line level electronics and speakers.
Okay, forget line level stuff, although I don’t see how they are less susceptible to the effects of a soldered connection than speaker level connections. Most of the connections inside an amp and inside speakers or crossovers that are "speaker level" are soldered.
Over time, movement will make it break or become intermittent faster than pressure connections. This is an important reason why solder is not used where two materials will flex.We’re talking about home audio systems that don’t move or vibrate like heavy machinery or production equipment. Our systems live a pretty luxurious life in climate controlled environments and spend most of their time sitting completely still. If your solder connections are breaking, you are doing something very wrong.