I doubt that, these guys are hardcore Bitcoiners from the early days and on top of that they travel the world to places that are not known for being the safest.

Maybe their secret is to never speak where they live? And when someone announces in advance they will be somewhere they need to watch out while getting to or leaving the place.

As I said if you're concerned about safety, you need these things. Safety is kind of a thing, the more you think of it, the more it weakens your mindset of freedom. 
May be those people have means to safeguard them and their stack or it may be that their concern to safety is less than yours 

Coinsreporter

I agree, I just wonder how people like @jimmysong, Antonopolous, and other known Bitcoin educators are able to do it safely.

cyphercosmo

bitcoin

How can I start a Bitcoin group/meetup without jeopardizing our safety?

I think you should start writing or posting about Bitcoin anonymously if you're so concerned about safety. 