When I took my terrier puppy to puppy kindergarten we were not allowed to bring retractable leashes. I think for good reason. I do not even use them until my dogs are about 1 year or walk nicely on a regular lead BUT, I like them and will continue to use them. They do lock in place and can be set at certain lengths.

I like to use them on walks to give the dogs a little more freedom to explore. I would never let either of my dogs off leash and the retractable ones give them a bit more freedom. I think if used responsibly, there is nothing wrong with them.

There is a time and place for them and the MUP on a busy summer day is NOT it.. People just need to use their brains LOL