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The title sounds a bit over the top. I just checked the roughly half dozen gun channels I subscribe to. Happily they are all still there. Took a look at some other channels that I look in on now and then but don’t routinely subscribe to. They all appear to still be there. Not commenting one way or another on this particular incident since I don’t have the facts. It could well be a deliberate and malicious act by some anti-gunner with access to YouTube’s equivalent to the ZOT button. But I am not seeing any indication of any broad change in policy.
If that changes I expect that a lot of folks including me will leave YouTube for another uncensored venue.
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Big fan of TiborasaurusRex and Hickok45, and both are still there.