The explanation

All of it is really simple. In a recent update valve forced servers from refreshing the MOTD more than once for those who were connecting through quickplay, but not for people going through server browser. So there must be a way servers detect that people are coming from quickplay. And that something is a little word added onto a well known console command.connect IPgoeshereNormal connecting command, frequently used to access hidden slots on various servers or just for normal connecting needs. And who knew that adding the word matchmaking to the end would trick it into beiliving you came from quickplay!connect IPgoeshere matchmakingAfter putting the code in and connecting, you'll be able to close Pinion and stay ad-free the entire session in the server. Enjoy!