It's not?
Of the current EIGHT title holders, all but two are Americans. The one vacant title is Welterweight, and the two guys fighting for the belt are Americans. All the top contenders at WW are Americans. Of the 20 title changes (including interim titles) at HW, all but five title changes have been in the hands of Americans; the longest-reigning champs have also been Americans. At LHW, there have been 13 title changes, only three to non-Americans, and the most dominant champions (Shamrock, Ortiz, Liddell, and Jones) have all been Americans. Of the six MW champs, four have been Americans (2/3). Of ten WW title changes, six have been to Americans, and the next one will be, too. All six LW champs have been Americans, and aside from Hermes Franca, all the challengers have been, too. Though FW has a Brazilian champ, half of his defenses have been against Americans, and there are more dominant Americans in that division than any other nationality. BW is in a similar situation; the current champ is Brazilian, but the last (undefeated) champ was an American, and Americans have been the only contenders for the BW title. All the Flyweight and Women's Bantamweight tile matches have been between Americans.
Though the UFC is a true international show (the longest-reigning WW and MW champs were a Canadian and Brazilian, respectively), it's definitely the Americans who are dominating. Why do you seem to think otherwise?
Edit: "...and here I thought you guys were watching 'good' fights and not Americans against non-Americans and making it a thing of nationality."
We ARE watching good fights, and if you've read my answer you'll see that it's not just Americans against non-Americans. For the most part, the only fans that seem to make it a thing of nationality are the Brazilian fans; American fans like who they like, regardless of nationality. You can hear how much they've cheered for guys like Andrei Arlovski, Fedor Emelianenko, Anderson Silva, GSP, and other non-Americans. But the OP is apparently under the impression that the UFC is dominated by non-Americans, when it clearly is not. That's not a "nationalist" thing, that's opening a Wikipedia page on the UFC champs, or looking at the ranked contenders. Fighters from Japan, Korea, Brazil, and Europe all come to the US for training because American fight camps are among the most professionally-run in the world. Brazilian camps are notoriously laid back to the point where nobody shows up on time, Japanese camps are notoriously disorganized (and "strategy" is apparently never spoken of), and Western Europe doesn't have the wrestling skills needed to excel at MMA. Again, this isn't a nationalist thing, it's just how the fight culture has evolved in these different places.
UFC bouts aren't about nationalism. Most of the fighters are American because Americans are the ones excelling at MMA on a larger scale that most countries. Most of the bouts on the UFC card tonight are American vs. American. Other fighters include a Brazilian, a Cuban, and a Ukrainian; past bouts have featured Brazilians vs. Brazilians, Brazilians vs. Canadians, Koreans vs. French, Brits vs. Brazilians, Dutch vs. Brits, Japanese vs. Brazilians, French vs. Croatians... it's an international sport.
No it's dominated by Amercians. The Heavyweight, Light Heavyweight, Middleweight, Welterweight, lightweight, Flyweight, and womens champion, are all American. Yes Americans dominate.
...and here I thought you guys were watching 'good' fights and not Americans against non-Americans and making it a thing of nationality.
yes becuase cain velasquez, chris weidman, demitrious johnson, jon jones, anthony pettis and ronda rousey are NOT American
explain?
