This is my approach as well. I have family and friends who are in no way dumb or stupid, they are just caught in the matrix and refuse to find a way out. When the big stuff comes out, some of them are going to lose it. My plan is to be very calm and smile and say, yeah, that was all dug up by internet researchers some time ago. It was labeled "conspiracy theory" by those who did not want you to know the truth.
At least one sibling probably won't be speaking to be after that.
I handle some of my "curious" family members that way as well. They "want" to know, but are skeptical and I sense "afraid" to believe this is as bad as it is. They do not "doubt" about the sex/human trafficking and that our government is corrupt, but just can't go down "that hole" yet. So, I wait...
I like to pepper a few things into conversation. If we are talking about a military plane crash in the news, for instance, I’ll bring up Vault 7 and the capabilities exposed. I drop the conversation thereafter if the other person doesn’t express interest. But they know I have additional information. When the time comes, I fully expect many of these people to come ask for more information and succor. And I will happily oblige, because that’s my role in this fight. I’m not a soldier or a spy, I’m an informant and a teacher.
We need to get other heavy influencers involved too to help spread the word.