USB-C isn’t magic. The length and type of the cable can severely affect its reliability (as Mac users have been painfully aware of since 2016). I don’t trust anything less than a 100W, short (0.5m or less) Thunderbolt 3 cable if I want anything more than USB 2.0 speeds or basic charging.
edit: I’m aware this is a rather extreme superstition, but I’ve been already spent too much time messing with cables
I think you might be misunderstanding what “observation” means in that context.
Wikipedia: Observer Effect