A much more viable solution that does not suffer from this issue is to broadcast on that frequency at so high a volume that it obliterates any chance of the left being able to communicate amongst themselves.

This is absolutely wrong, since it won't do what you intend it to do. It won't eliminate their Discords, it won't get rid of their IRC substitutes, it won't stop their mailing lists. All it does is make it hard for those on the right to tell who is can be reasoned with and who cannot. Let the left uniform themselves without even knowing it.

Use the example of what happened to the "boog bois" and weekendgunnit, as why uniformed enemies are easier to fight.
A for a few months as the beginning of the year post increased about wearing Hawaiian shirts on r/weekendgunnnit. Then people with Hawaiian shirts started showing up to the riots armed. Essentially they chose (or more likely the glowies chose) a uniform. This allowed easy attack on them. Reddit of course started acting against Weekend, and the MSM started an attack using their uniform as a vector. This of course culminated in weekendgunnit moving to .win and dying.

Allow your enemy to wear their uniform. Use it against them at every opportunity, but do not reveal what allowed you to determine their allegiance.

Sino Delenda Est

A much more viable solution that does not suffer from this issue is to broadcast on that frequency at so high a volume that it obliterates any chance of the left being able to communicate amongst themselves.

This is absolutely wrong, since it won't do what you intend it to do. It won't eliminate their Discords, it won't get rid of their IRC substitutes, it won't stop their mailing lists. All it does is make it hard for those on the right to tell who is can be reasoned with and who cannot. Let the left uniform themselves without even knowing it.

Use the example of what happened to the "boog bois" and weekendgunnit, as why uniformed enemies are easier to fight.
A for a few months as the beginning of the year post increased about wearing Hawaiian shirts on r/weekendgunnnit. Then people with Hawaiian shirts started showing up to the riots armed. Essentially they chose (or more likely the glowies chose) a uniform. This allowed easy attack on them. Reddit of course started acting against Weekend, and the MSM started an attack using their uniform as a vector. This of course culminated in weekendgunnit moving to .win and dying.

Allow your enemy to wear their uniform. Use it against them at every opportunity, but do not reveal what allowed you to determine their allegiance.