whenever someone tells you to stop letting outright fascists take power

Read Fascism and Social Revolution by R. Palme Dutt

Read Economy and Class Structure of German Fascism by A Sohn-Rethel

Then tell me that it is possible to keep fascism out of power through voting.

So what are you doing right now to fight fascism? If the answer doesn't include being active in a socialist organization, the only people that historically have been effective at opposing fascism, then the answer is effectively "diddly-squat", and you should get your ass in gear.