@iju if you state your own position, you become vulnerable to arguments and criticism in a debate.
If you don't, you're just coasting, exploiting the vulnerability of the other person who *did* state their position. You're free to flip-flop, "just ask questions", and use any other kinds of eristics.
So, when I see something like "what about Palestine", which lacks a clear statement about the main topic, that to me looks like an attempt to misdirect, not have a conversation.