Given how our current system is designed, it is not impossible but would be very challenging to create bots that can do this.
We are working on a socket feature so that instead of having to refresh, the new emoji just appear for everyone with an active connection to the system. This will help level the playing field for future emoji release events. We are also exploring the idea of doing some kind of lottery for repeating and/or rare Yats.
Our goal is to make these events as fair as possible.