It just so happens that the version of Windows these customers are asking for already exists, as an actively-supported product. But you can't buy it. I can't describe this behavior as anything but anti-customer.
This is similarity bias affecting your judgment.
I believe the way windows 10 currently runs update is wrong for me, and for most tech users, by far. I'm glad it takes 10 second to fix it to allow delayed updates again, but still I would like it to come out of the box easier to manage.
On the other hand, for the very very vast majority of windows users, this is superior to the end result they experienced before (updates never installed, and not by choice).
What's wrong here is a clear case of "one size fits all", they apply the same system they made for the majority to everyone, and it end up not work for some users for a variety of reason, but it's (imho) wrong of you to think this is not exactly what most users want: "do it like my phone/tablet, I don't care about updates"
The amount of people asking for something like LTSC is large enough that Microsoft really, really ought to make that version more widely available. IMO, Microsoft's refusal to do so says a lot about their values as a company.
FTFY. I'm not talking about the improvements underneath the hood, but just the way things looked and acted under Windows 7.
I switched over to the "Semi-Annual Channel" in Windows Updates advanced options. The "Semi-Annual Channel" is for "widespread use in organizations" versus the "Semi-Annual Channel (Targeted)" which is "ready for most people."
Also, the updates can be deferred for up to 365 days, but I'm not sure if that would slow the updates down rather than just delay them.
Disclosure: Microsoft employee