Such social media apps are extremely hard to overtake due to the critical mass effect, and that's the reason why Facebook still stands after all this time. Even sites that are strictly better than Facebook often fail due to not having enough users, let alone those that are worse. Unless there's a very strong incentive for users to use byte over TikTok, there's no way it will survive.
The official launch is the one time a bunch of people may give you the benefit of the doubt and try your app, and if you fall so short on the first impression, most people will probably never give it another try. And again, without users, there's no content, and without content, there's no users.
TikTok's penchant for censoring content may be the opportunity Byte needs.
- byte sticks to the very strict 7s limit while TikTok is a bit loser
- TikTok's use of music and re-used sounds help bring popular "trends"
- As per the above, you can quickly browse other tiktok's made from the same sound / in the given trend
- TikTok has other interesting features too such as duos, letting you reply to someone else's video, side-by-side
- TikTok's are very easy to share, and most importantly have a Web UI
- TikTok doesn't require an account, as soon as you open the app, you're dropped right into a feed of interesting videos, easy to scroll
These platforms are all about content, and TikTok having penetrated the US means it'll be very hard for byte to get users, and without users there's no content.
I personally don't think Vine really failed per-se. Twitter just didn't think it was a place worth investing, so they stagnated. TikTok as mentioned above has brought many new interesting evolutions to the format.
Most importantly, their learning based feed is pretty top notch and learns your taste very quickly.