And we shouldn't allow this concept to go unchallenged here on Lemmy.
Commenting on an active post is not brigading
Posting a link to something is not brigading
Commenting on something you were linked to is not brigading
The only thing that might be brigading, but isn't because it isn't a real thing, is someone explicitly going, "Hey everyone, go here and harass this person"
It's all fine and good that we have some new rules to keep the peace with other instances but we must fight against 
The dominant class always has an upper hand in cultural hegemony, but our goal here isn't to convince everyone immediately and universally, to gain control of the superstructure-- it's to provide a counternarrative to the dominant narratives(s) carefully cultivated by capitalist [social] media.
It's clear when interacting with these people that many or most of them have never really been exposed to such a counternarrative. Just look at how uncomfortable they get when someone pushes back on their ideas in good faith. Probably don't even know what good-faith conversation on the internet feels like!
But at least a dozen people have visibly listened just in the time since federation, not to mention lurkers who may see these exchanges and start to think about things differently. For every one landlord or petty bourgeois person who can't be convinced for obvious material reasons, there's 10 or 100 working people that the ideas will resonate with. The very existence of a visible counternarrative or counter hegemony is instrumental in bringing about social change. There has to be something for people to gather around, something to replace the end-of-history capitalist realism they've been ingrained with.
Ah lmao my bad