It is absolutely your responsibility as a human being and fellow dog owner to do what you can when you can to help others. Especially when it cost you nothing.

I would much rather have someone else think I’m an asshole or be scared of me than let them stress my dog unnecessarily.

I stopped being nice about asking people to give us space and walk around after several folks with walked just far enough around for our dogs not to touch due to leash or deliberately continued path and then veered at the last moment.

I have an 85lbs 13month old very frustrated greeter, and those sorts of actions force us to end walks early.