Here I thought this was just a silver problem. I only started ranked about 2ish months ago.
Now I'm starting to wonder if this was a problem all along. The not talking thing has two modes, silent or toxic, Silent people used to just be the people focusing on the game and not wanting to get killed cause they were typing. Now its also a good chunk of chatty people who dont want to get reported for one little verbal flub. Seriously. Go over to Player Behavior and Moderation. Tons of people complaining about getting perma banned, they show their logs and they have a few swears or were toxic for one post. Yeah some are justified, them flying off the racist remarks or were toxic all game, but rito also has a swear filter. Whats the point in an 'optional' swear filter if they are going to punish people for swearing anyways. So now people just choose to say nothing. Riot even made not talking even easier with the ctrl+click chat notifications.
As for the objectives I still think its a Silver thing because some teams will objective like they are Challenger while other teams will Bronze V the whole game no matter how much you beg them. I had a game where no one even tried to take dragon till the 25 minute mark. It got contested and the victors just backed instead of taking it. I think the enemy team eventually took it around the 30 minute mark, not one got elder that game
I play support so I'm utterly helpless if my team decides dragon/rift/baron isnt worth their time. I mean unless I pick cass support. Then I can solo that shit no problem with enough mana/regen. But I usually have to deal with the full team toxicity for picking a none healing/tank support... Even though Cass W is amazing zone control and her R can fuckup team fights pretty good.