Note that while this can be helpful in general, it's often unhelpful on Stack Exchange. It results in people who do want to know about Y ending up with a high-

Note that while this can be helpful in general, it's often unhelpful on Stack Exchange. It results in people who do want to know about Y ending up with a high-scoring search result which doesn't contain information about Y. And even for the original questioner, the discussions about why they want to do Y may well take up more time than it would have taken for them to read an accurate response, decide to rule out doing Y, and go on to ask X separately.