The Smash speculation scene has been a hot mess from the beginning. There have been countless close calls to disconfirmations. Toon Link among others, even Ness back pre-Brawl.
Predicting Sakurai is an extremely difficult task at times. This Direct is a great example of why.
Sakurai was trolling throughout the Direct. Particularly on Sheik and ZSS, even saying the latter would not return before showing her in-game and stating he was just kidding. After a very long time, Ridley is apparently a stage hazard/boss, but the thing is....why just show his shadow? What's so special about Ridley as a stage boss that he can't directly be shown? Especially after all this time?
I admit, we're in a similar situation to Toad supporters, and similar to the one that those who supported the return of Toon Link were for a time. But there is evidence that Ridley might still be playable in some form. I'm not saying we should suddenly go back to saying Ridley is extremely likely, or Toad for that matter, but there is still a bit of evidence that Sakurai is still teasing Ridley in some way. There are certainly precedents for similar situations, case in point: Toon Link on the Spirit Train. I admit, it doesn't mean as much for Ridley, considering that as a hazard, the clone Ridley would actually affect the match significantly by attacking, while Toon Link and Alfonzo just stand around.
But, with such surprising things going on, and with a little evidence left, there is a possibility that Ridley will still become playable. By no means is he likely at all, his chance is extremely slim. It's still not enough to completely disconfirm him.