You're definitely wrong. He only outright said "Tripping definitely will not return", never specifying any kind whatsoever.
While the interviewer's question seems to imply he meant Tripping, Sakuria himself made zero implications if he understood that kind was being implied as well. It was just a straight answer.
There is no confirmation of random tripping gone and never was. Just people taking a vague statement at face value. In reality, he said tripping would not return, and tripping returned. It's very possible he simply changed his mind and that's all it was. It's also just as possible he was referring to random tripping, but didn't actually imply it himself. Also, the interview's source is surprisingly lacking. You'd think he'd post a picture of the original interview, but that's all lost to the Twitter's natural deletion of older messages. The real message is gone, and we have a "this guy says so" for a source, which isn't reliable enough to confirm things, nor was the original interview more than overall vague at best. Likewise, implications aren't good for confirming stuff anyway. They still are vague and hard to take as facts, as they are always open for interpretation period. It's the same reason why we don't say he confirmed random tripping is gone on the SmashWiki(namely because that'd actually be lying due to bias, ignoring the fact Sakurai didn't imply a thing himself).