Some people have always been judgemental arses where just about anything is concerned and it is getting worse ime.
My DD is 19 now but I remember being on a bus and she was at the front in her pram with her dad and I'd had to move to the back, there was another pram with a tiny baby as well and it was hot, too hot to wear my coat (especially with post birth hormones flying around!) the other baby started to cry and really got into his stride and with me breast feeding, the inevitable happened 🙈.
I tried to cover myself but it was pretty obvious what I was doing when a woman leaned over and tapped me on the shoulder and told me instead of 'hiding' at the other end of the bus shouldn't I be getting off to feed that 'poor baby'?
Initially I just wanted to cry because everyone within ear shot swiveled and looked at me, my eyes teared up but then something snapped and I rounded on her and told her that I had no plans to kidnap and feed someone else's baby because mine was the one fast asleep and other people's feeding schedules were not mine, or anyone else's business.
Everyone, including the windbag suddenly found their feet very interesting!
I really felt for those parents with that baby though, no matter what they did he just didn't calm down and I'd been there myself!
So, I think your time will come @Sally922 when you'll give as good, or better than you get when faced with a judgemental idiot, it wasn't today but you will one day.
I do agree that the "Someone doesn't sound happy" is very often (certainly from me) offered in sympathy and to kind of let you know that you aren't alone in what you're going through, almost like "Yeah I get it, it sucks!" combined with everything though I get that it can feel like another judgement.
Those men were just typical impatient idiots who think that the world has to revolve around them, and have to resort to aggression in order to be noticed by anyone. If you go places that are open to others then shock horror, other people are going to be there.
I know it's tough being treated like that, and it once would have upset me too, but honestly these days I would have turned around and said "Yeah? Try it, see what happens!" Or similar because people like that usually go all wibbly and pathetic and then play the victim when they're challenged - they do it because they don't think they will be, it also draws attention, in public, to their shitty behaviour and usually that embarrasses them too.
💐 for you, it will get better, you're doing a great job.