You would probably be shocked at just how much purposeful voicing and subjective manipulation happens in recording studios, from the choices of transformers in microphone preamps, to use old/outdated limiters and other devices to 'smear' or otherwise distort the sound in pleasing ways determined only by the subjective choices of the producers and engineers involved, on down through the guitarist who voices his tone with some of the things you say simply aren't audible or that they don't even exist.Here is a simple exercise, think about the recording studio and how many electrolytic capacitors the recordings we love have passed through. It's probably hundreds with all the recording equipment. Does it really make a lot of sense that the last one in the speaker is going to have such a drastic effect on the signal? If it did then it would mean that the hundreds that signal passed through before you listened to it would have already rendered the musical instruments so "smeared" and "distorted" it couldn't hardly be recognized as the original sound clip. Of course we know that's ridiculous, just as ridiculous as claiming such drastic effects from a measly capacitor inside a crossover network. Don't get me wrong I have measured some very minor differences in some applications but it's far below audible. I find it hilarious that they want to bring up the "transient response" of a capacitor yet they ignore the transducer. The latter, which takes electrical signal and converts it to mechanical work, I.e. a motor to push sound pressure waves. These transducers have mass, they are going to have a magnitude higher amount of distortion in regard to instant impulse response. It's like ignoring the elephant in the room while trying to say Bigfoot or a unicorn is somewhere there instead and to blame for all the elephant like effects we are perceiving at the time.
Chill with the condescension. The biggest sign of somebody's advice to ignore is somebody who knows just enough to think they know everything, without having learned enough to know they don't.