A third party vote is a spoiler unless you change the voting system. RCV/IRV is an absolute minimum.
Approval voting requires no modifications to ballots, has no spoiler effect, and would be so much better than what we have now.
Which is exactly why it will never happen - both major parties enjoy their power duopoly. The powerful always resist democracy because it takes their power and gives it to the people, be they monarchs, corporations, or political parties.
I believe America is desperately in need of voting reform. And I believe the only way to achieve that is by voting against the establishment. I won’t be voting left or right this election. I’ll either be voting third party or writing in a strong left/right P/VP ticket.