This timeline never made sense to me. The reason why Hitler's anti-Semitic speeches were so popular was because the Jews had occupied high positions of German society. How? By blending in with the rest of the population. While there were a few Orthodox Jews, German Jews, more or less, blended in with German society and they used this to their advantage, climbing the societal hierarchy into places of importance. A large majority of Jews even fought in the German Army in World War I. The idea that the Jews infiltrated German society and supposedly betrayed the German nation was what made the Nazis so popular and the Jews so hated.
The gypsies on the other hand? They are historically notorious for refusing to blend into their host country, mostly due to their migratory nature. They maintain their own culture outside of the culture of the host country. Not exactly the type of people who could infiltrate a society, like the Jews supposedly could. Plus, I don't think there were many gypsies in 20th Century Germany, if at all. Gypsies were and in some places, are still reviled as thieves and pickpockets, but that's it. They weren't depicted with the ability of using their connections to the world economy and governments to destroy nations at their whim, a stereotype which turned the German population against the Jews. While it is true that many gypsies were exterminated during the Holocaust, the Jews were always Nazi enemy number one. I don't see how the gypsies could take that spot away from the Jews.
If Hitler had tried to build the Nazi Party around a hatred of gypsies first and foremost, he would attract some supporters, but the German far right would laugh and consider him a joke for focusing on gypsies and not on the Jews, the 'true enemy' of the German people.
