I said the two things are different, you said how does that make asking for consent for the two things different, and my response was that for one of them it already works that way without your consent. That is a clear difference. Yes, I'm talking about the technology to explain the difference, because it's a concrete fact. Your argument that a bridge should be opt-in requires an abstract boundary that some instances are are allowed to federate on an opt-out basis and others are not.
You don’t build trust in users by using practices like opt-out, which is again, the only argument I am trying to make.
The instance you're on uses opt-out practices. You didn't consent to your post federating to kbin.social and yet here we are. If you don't trust the bridge, fine, block it. Every tool on the fediverse that you already use to deal with its inherently opt-out nature is available for you to use with this bridge.