It's possible that "that entire point" might make sense in an alternate reality, but here in the real world, a "protest vote" for Bernie Sanders, Jill Stein or Ralph Nader will ultimately lead to the election of the Republican Party's presumptive nominee, the sociopathic, megalomaniacal demagogue, Donald Trump.
During the interval between his inauguration and the next election cycle (hopefully...) in 2020, Donald Trump will have had the opportunity to appoint at least 2, and as many as 4 ultra-conservative Justices to the Supreme Court. Also, the "coattail effect" associated with a Trump victory would enlarge the existing Republican majorities in the House & Senate, which means the abolishment or crippling of many Progressive programs and institutions, including affordable healthcare, the Environmental Protection Act, climate change initiatives, election finance reform, the Clean Water Act, or woman's right to an abortion, to name just a few. It could also fulfill the Right's dream of abolishing Social Security, once an for all. And it's a foregone conclusion that the odds for passing any new Progressive legislation would be zero.
In no uncertain terms, it would be a nightmare scenario!