The only responsibility you have is to the townhome association who made the exception for you and to your majestic GSD.
Continue to be the excellent owner that you seem to be and let the others be as they are.
Carry your head high, as I am sure your GSD does.
Don't get sucked into their candy ass world. Ultimately, as they notice you and your GSD's excellence, they will back off.
In my community, on Sunday am, there is a dog walking group of folks with all kinds, but mostly little yip dogs. I couldn't be less interested in joining them. Occasionally, we cross each other when I walk my three GSD's. I know they get a little uncomfortable, as they approach me, but we are always in control and keep right on going.
Good luck to you.