They’re actively engaged in and expressed desire in increased levels personal surveillance. With AI on the rise we can’t be too careful. Don’t make it too easy to find posts by you containing their names, or allusions to them. In a few years, posts like these could be considered illegal - even retroactively like the Nazis did!
I work in IT, specifically education. I know how easy it can be to passively and actively monitor thousands of people with one station. It’s probably already too late for us, but we can try.
Use metaphor, don’t use the direct spelling, don’t make your intentions completely clear.
And use Signal for the love of all which does not suck.
From what I know Element is a safer bet (similarly encrypted, but also decentralized), but Signal is the best one out of the messengers that don’t require any technical knowledge.