Why is it not as fun? It's just a different kind of game. There are plenty of tactical shooter or sniper games that go through a lot of effort to model the ballistics (like the Sniper and Sniper Elite series), as well as pretty much every tank and naval game. The Battlefields weren't as fast-paced as UT, but they made great use of ballistics for everything from sniper rifles to RPGs... added more skill to the game.
Even Unreal Tournament itself had some basic ballistic guns, like for the alt fire of the flak cannon and biorifle.
Indeed it did, although the flak cannon brings another set of issues as the preceding article talks about (basically it combines two very different types of weapons system).
And agree, different types of game need different mechanics. Battlefield games were a very different experience; I think the simple mechanics work in UT.
Even Unreal Tournament itself had some basic ballistic guns, like for the alt fire of the flak cannon and biorifle.