I'll try to break it down on why:
I've had enough establishment politicians like Biden, Kamala, and Warren who are all really just barkers that have no bite and also tend to have really poor policies. Yang on the other hand isn't even a politician, he's a entrepreneur. His ideas/policies on the other hand are either the same or similar yes, but unlike the other candidates he actually explains his positions on them and what he would do and tends to back up his opinions. If you watched any of his interviews, he never dodged any question thrown at him, he just answers it no matter what. I was originally supporting Beto or Biden until I heard his interview with Tucker Carlson. In addition Yang doesn't demonize trump supporters or other conservatives, he's actually trying to win over their support. which is what I want in a president, someone that doesn't just go after one group and demonize the other but wants to get support from all over the spectrum.
That's all. If you have anything else to ask etc then just say it.