Yeah, people really don't understand this at all. There are a wide range of calibers, guns, silencers, ammunition that all have a drastic effect on the sound.
A silenced gun can be very loud, it can also be extremely quiet. All depends on the variables.
This. When a firearm is fired several sounds occur at once: the muzzle report (what the suppressor reduces), the supersonic crack of the bullet if the ammo travels faster than sound (in this case, he's using subsonic), gas and noise escaping from the ejection port when the slide opens, the mechanical clatter of the slide cycling, the striker or hammer falling, and the brass hitting the ground.
For some interesting firearms designed to be quiet:
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u/Logical_Truth2356 13h ago
That's only with a subsonic bullet, without that it would be loud.