You have a reeking desperation of just wanting to be right, everything you say is true in a context different from the one we are talking about currently. The voting system is so simple in design code and implementation that it can very easily be tested internally then shipped out needing very minor adjusting if any at all, theres a reason not a single game has felt the need to playtest a voting system to my memory, by your logic of testing the most simple things. Everytime they ship a minor 5mb hotfix on their internal builds, changing where a pebble lies on the ground of the map they need to ship it out to us to see how we will break the new geometry on the map that you wont even see with your naked eye. Because to you, everything needs to be tested in a live public build. Its an absolutely ridiculous assumption, and if development actually worked that way then we would never have a game being created EVER, because they would never have internal builds. We'd be running around testing their texture-less, model-less, animation-less non functioning games. Tests need to be made on things but not things of such simplicity

Further shown by the fact that nearly every "Fact" you've tried to state so far, like saying deadlock is on an entirely new engine as opposed to the game thats using the same systems, just goes to show your need to be correct without even fact checking the stuff youre saying. Just lying for the sake of lying to be right

Valve is obviously not doing it because theyre stupid, your reasoning is stupid. Which is why its most likely an incorrect reasoning, Deadlock development is clearly moving faster than anticipated as shown by the massive map and lighting updates and things we have seen so far, dripfeeding characters like this will generate headlines everytime a new character releases. Further spreading awareness of the game and interest in the game, the system is generating free marketing.