I honestly think that Musical.ly is here to stay. At least for a while. Especially if established artists like Jason DeRulo continue to jump on board. These newer apps are making celebrities more accessible, which will continue to bring in new users.
True, the users now are young, but young people grow up, and rarely completely lose touch with the apps that they use. I’d still be on MySpace if it were still a viable social network.
I do agree with you on one point though. Musical.ly will need to update their features. They day we can make an animated video like on Snapchat, this app will explode.