Why would they make a github repo with this exploit for a seemingly not-fixed bug? If you're a security researcher it shouldn't be that hard for you to replicate it, and if you're not, there's no reason for you to have access to an app that lets you easily MITM someone's tinder results.
Because if shit like this gets magically patched and no one gets hurt, most people will continue to not care and groups like Tindr can continue to be lazy and do shit like this.
If the details in the post are correct, a tool like driftnet[0] should make abusing this pretty easy. Go forth and do bad things