Some dog owners (to be clear, some, not by any means all, but it only takes some to affect other people's general perceptions) seem to think they are objectively correct and the people who do not want that are wrong. So it is not hard for me to imagine someone who finds themselves regularly having unpleasant interactions with dogs feeling like "dog owners should stop that from happening", rather than (as is sometimes the case) acting like there's something wrong with people who think it's a problem. Conversely, it is understandable how people who are close to and friendly with an animal all day will sometimes fail to have sufficient perspective-taking to realize that not everyone feels as they do.
I've personally never had the extremely unpleasant experience of having a large dog try to jump at me. I have on rare occasions had the experience of having a small dog run at my legs, and the owner not immediately treat that as a failure on their part, which was unpleasant. Fortunately, most of those have then had the "I'm so sorry" reaction, rather than reacting with indignance, but I've definitely encountered pet owners who projected indignance that you don't think their animal is a precious sweetums who can do no wrong.
Most pet owners are extremely reasonable people, and it's unfortunate that encounters with the exceptions to that can give people a poor impression.
I understand people get scared, and do not control their emotion. But dog owner should still control their dog! Releasing dog after owner triggers it, is just pure hate!
It is like inviting delivery driver to your house, and latter claiming it was trespass!
Are you sure the dogs are not already off leash in your area when you are running by. There are many owners who simply have their untrained dogs off leash when they probably shouldn't.