[2021] [Bug/Glitch]Kicked For Inactivity - Absolutely Stupid

I don't understand why you get kicked for inactivity when there's a vote-to-kick system. I was playing Ranked with my team, and had to walk away MOMENTARILY to answer the door and speak to someone. I had already played majority of the match (at this point it was 4-3 and we were playing match point). I came back to being kicked for inactivity ALTHOUGH I WAS PLAYING THE MATCH IN ITS ENTIRETY PREVIOUSLY. I am absolutely LIVID, it cost me my rank (Plat 3 to Gold 1) on top of costing the match because I was out that round and the game did not let me reconnect until the next round started and could not spawn in. I seriously don't understand why people can be kicked for inactivity from ranked when other people cannot fill their spot otherwise. This has seriously become one of the worst organized games I've played.