I am also not aware that bitcointalk had an apk ready to be installed in apkpure.
Also, if you have the options for installing applications without using any 3rd party services, it would be much better. Don't settle for less though.
I even not see this until you've posted it and not visited that apkcure.com site as well (that makes me unaware). Quite interesting to see but better not and avoid this, I'm worried how I compromise my account having any apps just like this.
Having a lot of fake apps sprung online, fake/clone sites, it makes me bad. I have to stay away from this, ain't bother me to bookmarks legit sites than having apps.