While I understand that some people may feel this way, I very much hope that this sentiment is rare.
There are two sentiments here, that I think should both be common:
Children are welcome at community gatherings.
There are times when children should be quiet or absent.
Raemon’s solution is a good one here, as is a norm of parents removing children when they get especially loud. (At this event that may have been less practical than normal, given that it was about 40°F outside, but may have been solved by having a designated children’s room or something.)
There are two sentiments here, that I think should both be common:
Children are welcome at community gatherings.
There are times when children should be quiet or absent.
Raemon’s solution is a good one here, as is a norm of parents removing children when they get especially loud. (At this event that may have been less practical than normal, given that it was about 40°F outside, but may have been solved by having a designated children’s room or something.)