I don’t know if you read every post Gwyneth as I did but regularly people are saying the mother is attention seeking, flaunting, doing it to prove a point, to belittle bottle feeders and generally not doing this out of necessity and ease.
Personally, with the research evidence largely stacked up against taking young babies in the pool at all, I’d prefer no young ones in the pool!
However, even in the example you give, your “mum and two children” would have to get out and presumably get cold for what might be a two minute suckle.
I don’t want to argue about the subject really as I know there’s no point. I can’t stop what I feel though. This is a sad sad thread with a lot of hostility in my opinion.