What programming language is the launcher written in?

So after numerous incessant complaints from a multitude of people about the 4th wall breaking on the home screen, on top of the fact that the home screen is constantly defaulted to, on top of the fact that you can't close specific windows on the home screen, absolutely nothing was done.

And now we've hit an all time low - we now have 4th wall breaking asians on the home screen (an extraordinarily common thing)...._ but now it's with cancer selfies._ So yep, I can't play anymore. Maybe I can just -- oh wait no I can't, because remember, the home screen is always defaulted to -- after a game, after a dodge, after a loss, after a win, constantly defaulted back there, constantly forced to deal with this 4th wall breaking cancer.

So there's nothing I can do to get rid of it except learn the code the launcher is in and change it myself. If it's for personal display purposes only and gives me no advantage, tweaking some things** just so I can bear to log in** should be acceptable, right?

Unless there's a signature default declaration somewhere that I can simply change so at least the default screen is something else, like match history. I'd really like to be able to play.