Mike Bloomberg, known for data-driven analysis, as well as Howard Schultz, Justin Amash, Bill Weld, Joe Walsh, etc. would all disagree. There is little appetite for a third-party or independent run this cycle due to President Trump's highly polarizing nature.
If you support Trump, you're going to vote for Trump. If you oppose Trump, you're going to vote for the person most likely to beat him (Biden). There aren't very many people undecided on Trump. Honestly the same can be said for almost every modern US Presidential Election but the effect is especially strong in 2020.
I'm also consistently surprised by the level of support for Tulsi Gabbard on these boards. She's a random soon-to-be former Democratic Representative back-bencher with an odd assortment of policy views and a very troubling level of accommodation and support for Assad in Syria. She never polled much above 1% in the Democratic primary, she's not very conservative, has little governing experience...honestly other than being hot I see absolutely nothing that is appealing about her at all.
I do appreciate that she's a servicemember I guess, more veterans & reservists/Guardsmen should serve in elected office.