It's a little of column A, a little of column B
Yes, it's true that some dog breeds have been bred to be more aggressive- but aggressive can mean many things.
I was roommates with a guy who had a Pit bull. Awesome dog, great with the kids. Never seen her so much as growl at a person. Animals though she did not fuck around with. And that makes sense, they were bred to fight other animals. So while they are aggressive, they aren't (naturally) aggressive towards humans, though obviously you can train them to be.
I had a different roommate who had a Chihuahua, Chihuahua's were bred for two things, to be fearless rat hunters and to be burglar alarms. They also have a personality quirk where they typically only bond with very few people, and even then it can take a little while for them to gain your trust. For about the first month after he brought her home she would bark at me every time I entered the room she was in. After she got used to me, she was the sweetest little pup you could imagine. If anyone else came by she just couldn't handle it. If I picked her up and held her while talking the other person she would eventually calm down some, but she still didn't like it. You usually just had to put her in a different room. She didn't nip at them or anything, but if they had tried to pick her up it probably would have been a different story.
Not all Chihuahua's behave like that, but it's typical.
I've lived with a Doberman who was a total coward (and neurotic the poor thing), and a Rottweiler who was perfectly fine with me, until her owner was out of sight, and then she acted like she had no idea who I was. As a kid we had a German Sheppard who was a total sweetie (the kitten thing was an accident), and I used to own a Chow/Lab mix who literally loved everyone and everything.
The breed plays a big role in their behavior, but so does training/ socialization. People who blame it solely on one thing or the other are just wrong imo. Some dogs will never be perfectly chill, but you can train them not to be assholes.
I swear, YouTube uses the camera on my phone/tablet to detect if I am facing the screen or not. It doesn't have 'permission' to do access the camera, but the behavior is too consistent to be a coincidence.
I can't fall asleep to silence. I have to have something playing to keep me from being alone with my thoughts, or I will literally never sleep. So I watch YouTube videos while Im tying to fall asleep. I skip every ad as soon as it will let me when facing the screen. Every time, and I mean literally every time I turn over so my back is to the screen, YouTube will start playing one of those long ass ads, ones that will go on for 1/2 hr or more if I don't turn back over and hit 'skip'. It's just too consistent to be random.
The best is when it's the ad for the stupid ass 'superhero' audiobook where the main character is the only person who doesn't have a superpower and gets picked on, and by picked on I mean they force him to watch as they SA his girlfriend. I have done the thing where you can request they don't show you that particular ad at least a dozen times now and it never helps.
I already know that guy will get his superpower eventually. I already know that he will get his revenge on his bullies. Its about the most obvious, 5th grade level writing you could imagine. Nothing about it appeals to me, I hate that fucking ad with a passion.