I've never judged how anyone gave birth. Who cares really, plus if you don't want to tell people about what really is quite a private thing just don't and change the subject.
I have had two vaginal births and the thing between them is the first was pure hell (36 hours, epidural, episiotomy, forceps etc) and the second was straightforward - 4 hours and just gas and air, no stitches. So I did miss out on the magic of birth the first time and a section was the next option.
The feeling after the second was amazing. I did feel powerful and strong having felt the baby's head coming and pushing and I'm glad to have had the experience of a good birth. However I was prepared this time to ask much quicker for a c section if things had seemed to be heading same route as the first time. Sometimes it's just luck and how things go on the day.
Generally with a lot of things in life, it's best to keep your gob shut with any potentially judgemental or upsetting comments as you rarely know all the story. Think what you like. And it's probably none of your business anyway. Those principles generally keep me out of trouble!