I get mums come to the group I run for all different reasons. Your comment about sitting around giving applause is uncalled for.
A lot of mums find breastfeeding very straightforward, and others have problems, the majority of which can be solved quickly. So the group is there for that reason.
Then there is the fact that breastfeeding is now the minority. A lot of new mums now know that breastfeeding is the better choice, but have never encountered it directly, so are hesitant and full of questions.
It also tends to be that mums who breastfeed are more likely to BLW, co-sleep and use a sling, so they often have questions about that too.
The idea of a 'general' baby group is overwhelming for some new mums, as it conjures up an image of a busy, loud room, whereas the breastfeeding groups tend to be quieter.
I know my group makes a difference to the mums who have attended, because I am told so, regularly. Have also received ''thank you'' cards and a bunch of flowers (which made me cry, I was so touched). Some mums just attend the once, some attend every week for months, some I see right at the start, and then right at the end.
So you are not unreasonable to ask a question, but the sarky comment isn't needed, really.