In the real world, if you have a whippet on a long line in public spaces past young puppyhood then you soon get people annoyed at you for that! I tried keeping her on a long line when she was a pup to train her, but it’s dangerous to her, to other dogs and to people to have a speeding dog on a long line.
I train for recall every single day. I have a whistle which I’ve blown every time I’ve fed my dog since the day I got her. I have liver paste, sprats, chicken, sausage, cheese for walks. I’ve taught her watch me, behind me, heel, wAit, stop, come. She know them all and is 80% fine, can call her back the vast majority of the time. Every single walk I take her on I call her back if I see a dog approaching on a lead, or a small dog that she likes to chase or a child. The majority of the time she comes back and gets a treat and I’m hopeful that it’s becoming more automatic as we go on. But I will never stop training her.
But on the odd occasion I will not see a dog/owner in time, and the dogs have already playing by the time I try to call her. Most times in this situation the other owner/dog is fine with this and they have a play. Sometimes the other owner/dog isn’t fine with this and I apologise and they stay still for the 30 seconds or so that it takes for my dog to stop playing and listen to me. Usually people are kind and patient if this happens. ( Like I have been when the tables are reversed in this situation occasionally)
But occasionally, like a few times a year, so really in the extreme minority, you have a git with some kind of personality disorder, who thinks that they and their dog are perfect and forgets that kindness and patience make the world a better place, and are so entitled that they think they should be able to use public spaces without encountering any kind of behaviour that differs from their own exacting standards.
Thankfully it is extremely rare as these anti social people are usually in enclosed dog paddocks, quiet lonely fields or posting in mumsnet from their ivory towers.
The majority of dog owners are kind, tolerant and patient I find and are trying their best. Of course you do get the odd bad one who doesn’t attempt to train their dog atall or is arrogant enough not to think they should. But thankfully these people are as rare too as the people at the other extreme that I’ve described above. Most are in the middle, trying their best and being kind to others.