That last part is enough to ditch them unless you were fighting with them in IRC. Were you?
Your claims ring true for vast majority of new, COMSEC schemes. Far as Tox, this is what I found on their GitHub page: "Current build status: build failing." I'll add that NSA and malware authors have 0-days on the platforms the tool will likely run on. It will be bypassed like all others on such platforms.