no its not. you easily pass 50 people each way. if you were to greet every one of them, a) you would not be able to talk to your walking partner and b) you’d be out of breath by time you got to your destination. OOT you dont have this problem. its just the difference of the nature of things.
I live in Israel; I also easily pass 50 people each way. I may not say Shabbat Shalom to each individual if they are walking in a group, but I will say it to each individual or group I pass. My walking partner(s) don’t seem to have any problems either. We manage no not be out of breath, even though we are walking uphill.