Extremely Immature players since a week ago - something changed

Has anyone noticed this ? I know they changed ranked q. I have had the worst teammates consistently in 70% + all games. It's untenable. It seems like I'm playing with 8 year olds. They quit and stand in base after dying and more early surrenders than I've ever seen. Also whining complaining trying to quit within 5 minutes of the game starting. Not bad players like what that used to mean, but immature people who are extremely emotional and flame and ragequit or troll. What happened ? I looked up if there was an adults only server but I guess this will never happen. I like the game, but this is making me want to find something else. Is DOTA like this or are the players older ? I've played since season 3.
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