Are third party keyboards just another one of the "awesome features"'Apple fanboys had to live without?
Instead of replacing the already sufficient iOS default keyboard, we can use third party keyboards to simply enhance the default keyboard, similar to how the emoji keyboard is just used to enhance the main keyboard.
The gif keyboards (PopKey, Riffsy, etc), for example, are not designed to replace the keyboard, but only to be used when you want to copy/paste a gif into your messenger app. The font keyboards (FunKeyBoard, etc), can be used only if you want to add "fonts" to your messages. Same with the alternative emoji keyboards, etc etc.
What do you think?