It's as simple as this. The election was not legitimate. Trump was placed into the presidency.

[gratuitous]

7. The remedy isn't frightening; it's non-existent (which may be more frightening)

There is no provision in the U.S. Code or the Constitution to nullify an election. That's not to say that Congress can't fashion legislation to address the possibility of a stolen election in the future, but the 2016 election is in the books. This isn't like the NCAA nullifying a school's victories or stripping a team of a championship years down the line for irregularities. It didn't occur to anyone that a major political party would sell out the country to a foreign country. As long as that party remains in power, there will be no remedy. We the people have to decide if we want to turn that party out of power or if we're comfortable with the new status quo.