I agree and disagree with this. There is an element of learning the test and learning how to quickly parse test passages for potential test questions. But I also don’t think the way I went through dry test passages is all that different from the way I’d scan a lot of work documents, or flyers, etc., unless you’re really out to savor every word.
So I guess what I’d say is, if you practice increasing your speed on test passages, yes, that does have some useful real-world spillover.
The listening passages are pretty far removed from reality or necessary real-life skills, though, since everyone speaks in a way that obfuscates important information, as opposed to real life, where people generally try to be pretty clear.