Hopefully it's got better security than Gab, Parler, and Gettr, those were pretty funny disasters.
So far the twitter alternatives have floundered, while some of that is due to poor design, main factor is the audience they're going for. The main attraction of these platforms is "I can say what twitter won't let me!". That's great, except that twitter lets all kind of crazy stuff going on, along with the more mainstream content. Building a platform around people who get kicked off of the mainstream platforms doesn't tend to bring in "normies", it brings in more and more fringe elements (best examples aside from gab/parler/gettr are the offshoots of 4chan).
This brings up further issues. The first is basic, what fun is an echo chamber? The reason a lot of people liked twitter was arguing and "dunking" on people they disliked. Can't dunk on someone if they're not there, and it's no fun talking smack if they're never going to see it. People get bored and go back to where the people they argue with are, or start going after each other when they can find much smaller differences to fight about. This also ignores the fact that a lot of twitter's popularity comes from the huge variety of people on it, from politicians of all sides and levels to entertainers, athletes, normal people, business leaders, etc., that the alternative platforms don't tend to get.
The second is, as we've seen with the other alternative platforms, the fringes of any group get weird. What happens to your free speech platform when you're dealing with legitimate hate groups (not just media defined ones), do you let your platform become the de-facto app for neo-Nazi (as one example) groups to hang out in? Do your other users, many of whom find that reprehensible, balance out those elements, or do they start saying huh, this is a pretty bad look, maybe I don't want to be tying my name to a place like this? If you do take action against them, well suddenly you're not a free speech platform and then you lose that cover as well.
Looking at the people publicly involved I'm not seeing too much of a reason to be optimistic that they've created an interesting technological or interface component that provides something better than the other apps on that front, but I've been wrong before and might be surprised.
