Yes the markets are completely controlled until the controls fail. Such was the case in 2011. After the 2008 housing crises, silver plummeted just as it did last year with Covid. Then when it recovered it broke past previous highs and the large short positions on the futures market capitulated and got squeezed out so they let it run high enough to absord their physical positions on the way back down. History repeats, but in this case the time is compressed and the movement is amplified... by several factors including increased industrial demand, global monetary debasement and the rise of social media.
Here's one way "they" do it, and I've been told this by two different refiners. A Chinese "businessman" will appear out of nowhere and contract to buy a large portion of refinery production. Then, as suddenly as he appeared, he will disappear and another one pops up. This is how China is accumulating vast quantities of gold and silver under the radar. At the same time, China shorts the futures market with almost unlimited funds to drive the price of physical down. When they or JP Morgan or other large holders think the time is right, all they have to do is cover their shorts and sit back and let it run. So a radical rise in silver wont hurt any of the central banks or large traders who are properly hedged but it could destroy those who are not on both sides of the trade.