Fascist are weak. They rely on the population and their politicians to not expose that weakness by challenging them with strength.
Unfortunately, they are not being challenged with strength. They are being challenged with the existing systems and an appeal to "the process"; and the population maintaining order in hopes they will be brought to heel by the very systems that allowed them to take power in the first place.
We will not defeat fascist by simply calling them weak, or fragile, or waiting for the process to remove them. They will not follow the process and will defeat everyone that attempts to fight them through it. They are breaking the rules of the process. The process itself needs to be changed, not clinged to as some religious doctrine.
The only thing that crumbles them is strength. The only thing that will stop them from returning is a fundamental change to the process that allowed them to rise in the first place.