I have concerns about the success of this platform. I am convinced what makes TikTok great isn't necessarily the algorithm (its good, no doubt) but the volume of content. There are so many users producing content that the amount of content you find enjoyable is always more than you could scroll through in a day.
A platform like this will be boring pretty fast when you scroll through the 100 new videos uploaded that day in an single hour, and you skip many of them. It's tough to generate enough content without enough users, and most of the content will likely just be aggregated from the other short-form sites. Of course that's not necessarily a bad thing, it's a more privacy-friendly way to browse that content, which is a plus.
Also, not particularly a fan of more brain-rotting short form content. It's crazy how addictive it is and I'm wanting less, not more. But if I had to choose a "shorts" platform I'd sure like a federated, free one to be the one to succeed. But it's got a long way to go