Tulsi hasn't been a Democrat let alone a leftist in a long time, if she ever really was one in the first place. She's going where the money is now, and that's grifting. That's easiest to do the further right somebody goes. She's a semi-pretty face conservatives can shove out there to fake a left viewpoint.
It's kind of hard for her to leave the Democratic Party when she wasn't really a part of it.
I do have to give her credit though. She's got all those empty conservative buzz words ready to go at a moments notice now. Quite impressive. Any more when somebody uses the word "woke" and it's not in the form of mockery of the people that seriously use it, it's hard to take them seriously after that.