I also support harm reduction and I practice it at the ballot box, I just don't think there is anything to gain by hammering people over the heads trying to sell them on harm reduction. It's completely ineffective at inspiring people to the kind of mass coordinated action that is required.

what's the outcome of mass disillusionment?

Disillusionment is effective at inspiring action, provided you can get people past the apathy stage. The fact is people are being disillusioned - for good reason - and fighting it is counterproductive. So long as you're focused on trying to pull people back to the center for the sake of harm reduction, you're ceding the populist narrative to the fascists.

are the Cool Socialists ready to replace the electoral system?

Absolutely not, which is why more people need to organize, and before they will be willing to organize they have to become disillusioned with the system.

because to me it seems way more likely that the Worse Fascists will benefit the most from mass disillusionment.

They will if we don't meet people where they're at like they're doing.