Put my self in Bronze to see how hard of a climb is would be.
So getting out of Bronze took some work but was doable.
Silver on the other had has way more and I mean like 4x more feeders/trollers
Solo means you have 4 other chances on your team to get a feeder/troller and this happens so often you cant climb out of silver.
Their needs to be a minimum MMR that is allowed to join Ranked.