hazards?

We decided to visit the seaside by train. 

We walked to the train station and noticed the big signs about wearing face masks. Of course, we did. 

Except, we were the only people on the platform to be wearing the face masks. A couple of unmasked older men were sitting on a station bench chatting. It turned out that they were not waiting for a train, but had just strolled down for the view.

Then we could see another group of maybe nine upper-teenagers. Not a mask in sight. It was mainly females, but with around three males lounging on the platform. I guess the herd immunity must have been in play although there were clearly too many of them clustered together for it to have been a single bubble.

Then, eventually, two more people arrived and immediately donned their masks. 

I'm wondering now, as I write this, whether I'm reactionary or neighbourly?