No. of Recommendations: 5
So, is this House measure meaningless? Symbolic, and nothing more?
Not meaningless, just not legally enforceable. There's a difference. Jockeying over the war power is an inter-branch political fight. These sorts of things are relevant steps in those political fights. Getting to a majority in the House willing to put themselves on record is political action, and one that can affect things (though perhaps only in a small way).
Note that House actions alone almost never have any legal effect - you need both the House and Senate to act in order for Congress to act in virtually all cases. And even if a War Powers resolution got out of Congress, Trump would just veto it. So all of this is relevant to the political struggle over exercising war powers, but not really relevant to a formal legal action.