SteemIt.com as the only front-end
I think you might be missing some, look at the same post at:
https://busy.org/smt/@ned/answers-steemit-development-and-icos-w-smts-video
or
https://esteem8app.github.io/smt/@ned/answers-steemit-development-and-icos-w-smts-video
or
https://beta.chainbb.com/smt/@ned/answers-steemit-development-and-icos-w-smts-video
or
https://stage.steemiz.io/smt/@ned/answers-steemit-development-and-icos-w-smts-video
or
https://steemkr.com/smt/@ned/answers-steemit-development-and-icos-w-smts-video
of course don't use your key material on sites that you don't trust
You took that quote out of context - I'm aware there are other front-ends, but it seems like many people don't, and as a result when it went down recently many people thought that Steem went down. I think the DDOS attacks were actually good in that they helped many people realize the difference between SteemIt.com and the Steem blockchain platform.
I came to the same conclusion :D :)
But then I went through busy.org but couldn't browse my old posts and left with dissatisfaction.