Right. Argue FOR the forces that handicap today's mavericks and alternatives to the Status quo candidates.
How many people have the time and energy to change their party affiliation twice? How many even know that they can do this?
Your argument reminds me of those who mock the voter I.D. laws because for THEM it's no big deal to show an I.D. They show a glaring lack of empathy along with an incapacity to recognize what life is like for those who may be elderly, or those who'd feel intimidated by these draconian procedures, or those who lack birth certificates and so forth.
By siding with the Authoritarians setting new traps, they show their disdain for the ACTUAL practice of Democracy. For it's Democracy that calls in all voters and doesn't place fences around polling places.