My experience so far in Silver is that in many cases people are worse than bronze 1-2, but there's a reason for it. I think there's a lot of noobs or new accounts who place into Silver but are going to drop to bronze. I looked at my bracket after I made Silver 3 and I was the only person with #wins over 20. In my league right now me and one other guy have #wins over 100 and everyone else is under 12. What this tells me is that we're getting matched with people fresh out of their placement matches, so yes = they are essentially new. How do you climb out? Carry harder. This is why I jungle. I try to help as many people snowball as I can, and take objectives independently of anyone else. Find a champ that you're really good with and play that champ as often as you can. Also, it's unlikely you'll be able to carry as support at Silver, so pick a different role. ADC or APC can carry harder than anyone else, so if you're good at those roles it's likely you can snowball the game more easily.
Final tip is: don't be toxic. Don't ask "WHY" or say statements like "THIS top lane..." or "feeders." If you want your teammates to play well, being negative doesn't help. Nobody wants to be called out for their mistakes, so don't do it.