> Yes they do. User manuals just don't make for very good marketing.
user manuals tell you how to do something, not how it works. E.G. a motherboard user manual tells you how to enter BIOS Setup, not how secure boot works; where to set USB power output in system power states, not what the power states are and how they transition.
https://www.asus.com/us/supportonly/a320m-c/helpdesk_manual/
https://w140.com/tekwiki/wiki/Main_Page https://bama.edebris.com/manuals/tek
As an example, check out the user manual (not the repair manual, though that's available on this site too) for the popular Tektronix 465, and scroll down to the "Circuit Description" section:
Also, many people are busy. Very busy. Even if someone wanted to read, he's way too tired to immerse in new knowledge. Source: Me. I simply have neither the time nor the energy to bother with learning anymore unless there's a very good reason to.
If you don't read the microwave's instructions and don't understand how 50% defrost power works chances are it's not going to permanently cripple you, or lead to $10k's in liability and repairs.
No. Ain't nobody got the time.
Operating a car safely doesn't require reading through a 2 inch thick tome every time you buy a car.
I thought I did when I was still a sweet summer child, reading every manual within reach and being told "How do you know that????" by every adult around me. That felt good.
I'm an adult now. Ain't nobody got the time. I know nothing; as in the third stage, not the first stage. I will ask the nearest kid "How do you know that????" and save myself the time and energy if I must learn.
The very first car you buy? Okay, sure, read through the tome since you have nothing to build on. But second car onwards? Ain't nobody got the time.
What? You're trying to tell me I don't know what the fuck Subaru X-Mode is? You're bold to assume I would even use Subaru X-Mode. That button isn't getting pressed for the life of the car ownership; users by and large do not change defaults and hate having dials and buttons to mess with, and I am slowly but surely becoming one of them.
Ain't nobody got the time.
But at least I don't suffer from a bad case of acne anymore.
Precious few hours are left for recreation.
As such, no, I sincerely do not have the time to go read tomes I have no need or interest in. As an adult with responsibilities I literally can't afford the time to be irresponsible. I certainly wish I could, the sheer amount of time I had as a kid was amazing.
And then they'll sell several different models which all have equivalent but different marking BS and no way to tell what the actual difference between the products is. Give me a damn table of specifications.