That's the first question I asked upon seeing OP's post, and I'm not clicking on that link because of that.  Glad I'm not alone in being annoyed by these threads that are basically just links.  It's a valid topic of discussion, but anyone starting a thread like this ought to start up a discussion with their own views.

Anyway, there's no way I would ever consider bitcoin a safe vehicle to hold money in if I were saving it for the future (as in a retirement fund).  The obvious reason for that is because of its volatility, which is what determines whether any asset is a safe one or not.  I've seen bitcoin drop 20% or more over the course of less than a week, and I'm pretty sure it's had even wilder rides than that.  Safe haven assets are those that are relatively stable and ideally at least beat the effects of inflation--like gold & silver are supposed to do.

These people here who are just saying "yeah, bitcoin is good safe haven" aren't really thinking about it IMO.