I cant speak on the security in the broad sense since im not educated enough on the issues. If you gave me an example or elaborated a bit more i could respond.

My comment was more in regards to Steem being the only crypto on the market that actually has society building potential on top of what every other currency offers.
BTC and all others crypto want to "force" itself into the mainstream society while Steem builds one from bottom up and invites individuals to be a part of it.