I mean, the example that you gave has me thinking that the manager is just bad. Some problems are just complex. You could not have left out the complexity here, because it is the problem. If it was as simple as they wanted it to be, then there would be no problem. But you can't make the problem magically disappear.

A good manager would ask what the problem is. Then they would ask why that is more complex than they know it. Then they would listen to your response and not understand a single word, but still recognize that, hey, evidentally there is a reason. Their expert said so, they don't have to understand the nitty-gritty.
The only reasons they might have to understand the nitty-gritty:

• They need to get active in their role to get the problem resolved, which they did not have to do here.
• They distrust you, which is a whole 'nother fucking can of worms.