Yes, in the context of "node consideration", I did. No, it wasn't much about "basically, be constructive" (though, being constructive is certainly also useful in that context). It was particular to a process like node consideration where a request for privileged action is asked for and voted on but can't really be commented on. For such, the request needs to be very specific (and the person making the request needs to be highly convinced that the action is the best action).
In other situations, it can be potentially beneficial to not offer an answer but to instead offer a suggested direction for finding an answer. But such can easily fail.