What if five players had connection issues and each were disconnected? How many minutes of a match would be paused?
Bots serve a purpose. I've only been disconnected about five or six times and couldn't return to just one of my matches. When I've been disconnected and managed to return, I wonder if anyone noticed the difference?
I have always announced my return - to no fanfair.
Additionally, some of those "bots" may not be bots at all. They could be players with connection issues struggling to stay in and play the game. It's hard to tell as most random players refuse to communicate with their team.