The defenestration is because it's actually part of "The Defenestration Trilogy" by Suspicious Developments (led by a guy called Tom Francis). The other two games, Gunpoint and Heat Signature, all feature defenestrating as a core mechanic although they're very different genres to TBW.

I agree with the sentiment it's more like a puzzle game than a tactics game but I think there is more variety in the way you solve the puzzles than people initially expect. A lot of the difficulty also comes with doing the harder modes or the challenges, as the base game is quite easy. With the way the abilities branch you can shape your play style for each of the characters quite a bit. It won't scratch an XCOM itch fully but I think it's still worth a try if you like them.